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1 . 计算:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9904cc460498030cdd9b86d8f682f518.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9904cc460498030cdd9b86d8f682f518.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ee071cd79ecb8b4d6d83bdb8adb2c08.png)
您最近一年使用:0次
2023-04-06更新
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40次组卷
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2卷引用:江苏省扬州市仪征市第三中学2022-2023学年七年级下学期第一次月考数学试题
2 . (1)计算: ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0cf5ef1759c9a8f69ae6aabb624ab30.png)
(2)解方程:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03f26668d5420deed99fa6fc4c39c231.png)
(3)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0cf5ef1759c9a8f69ae6aabb624ab30.png)
(2)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03f26668d5420deed99fa6fc4c39c231.png)
(3)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391e6d6061cf012bc466a2f29198f312.png)
您最近一年使用:0次
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3 . 观察下列一组等式,然后解答后面的问题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a85a7e0e0bf997b2bb68adbee6ebb6dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfce20f4f95f6bb6fb37c4b492ae73f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4cd9a7068de096606d1ab991f5e6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631a84902ccb96b6561abd3701737344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b700fa9aeb1016aa71f76e4b6bb212e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf095da69af7fc55b976ecc0c504b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5a1a7a04d4c10e7a45714482bfb58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4cd9a7068de096606d1ab991f5e6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631a84902ccb96b6561abd3701737344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5a1a7a04d4c10e7a45714482bfb58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b700fa9aeb1016aa71f76e4b6bb212e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf095da69af7fc55b976ecc0c504b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4cd9a7068de096606d1ab991f5e6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5a1a7a04d4c10e7a45714482bfb58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631a84902ccb96b6561abd3701737344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b700fa9aeb1016aa71f76e4b6bb212e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5a1a7a04d4c10e7a45714482bfb58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf095da69af7fc55b976ecc0c504b24.png)
(1)观察以上规律,请写出第
个等式:_________________________(
为正整数).
(2)利用上面的规律,计算![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b09a83972a9068dfff763edd2925358c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4cd9a7068de096606d1ab991f5e6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a91c33ebbacfc3e46515737af771e9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4cd9a7068de096606d1ab991f5e6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0992e5d4f7c7073e3f71108f51cd8fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af60b66747af568b90f61ee9707a9ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be87d297ad18a8dc62b3cdce94ec8b5.png)
(3)请利用上面的规律,比较![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea872287a155776bf38d4a4cab7e464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b700fa9aeb1016aa71f76e4b6bb212e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20838e72faf737614d76fcee82ab6c5.png)
与![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de31a7b108b0fdc888133f701e7c79b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b700fa9aeb1016aa71f76e4b6bb212e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea872287a155776bf38d4a4cab7e464.png)
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a85a7e0e0bf997b2bb68adbee6ebb6dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfce20f4f95f6bb6fb37c4b492ae73f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4cd9a7068de096606d1ab991f5e6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631a84902ccb96b6561abd3701737344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b700fa9aeb1016aa71f76e4b6bb212e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf095da69af7fc55b976ecc0c504b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5a1a7a04d4c10e7a45714482bfb58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4cd9a7068de096606d1ab991f5e6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631a84902ccb96b6561abd3701737344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5a1a7a04d4c10e7a45714482bfb58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b700fa9aeb1016aa71f76e4b6bb212e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf095da69af7fc55b976ecc0c504b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4cd9a7068de096606d1ab991f5e6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5a1a7a04d4c10e7a45714482bfb58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631a84902ccb96b6561abd3701737344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b700fa9aeb1016aa71f76e4b6bb212e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5a1a7a04d4c10e7a45714482bfb58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf095da69af7fc55b976ecc0c504b24.png)
(1)观察以上规律,请写出第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)利用上面的规律,计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b09a83972a9068dfff763edd2925358c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4cd9a7068de096606d1ab991f5e6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a91c33ebbacfc3e46515737af771e9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4cd9a7068de096606d1ab991f5e6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0992e5d4f7c7073e3f71108f51cd8fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af60b66747af568b90f61ee9707a9ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be87d297ad18a8dc62b3cdce94ec8b5.png)
(3)请利用上面的规律,比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea872287a155776bf38d4a4cab7e464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b700fa9aeb1016aa71f76e4b6bb212e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20838e72faf737614d76fcee82ab6c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de31a7b108b0fdc888133f701e7c79b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b700fa9aeb1016aa71f76e4b6bb212e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea872287a155776bf38d4a4cab7e464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
您最近一年使用:0次
2023-01-26更新
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221次组卷
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16卷引用:江苏省扬州市江都区郭村中学2020-2021学年八年级上学期12月月考数学试题
江苏省扬州市江都区郭村中学2020-2021学年八年级上学期12月月考数学试题江苏省扬州市江都区邵樊片2022-2023学年八年级上学期第二次月考数学试题安徽省六安市金寨县2018-2019学年七年级下学期期末数学试题河北省承德市承德县2019-2020学年八年级上学期期末数学试题陕西省榆林市第一中学分校2020-2021学年八年级上学期10月月考数学试题河南省平顶山市郏县2020-2021学年八年级上学期期末数学试题河北省石家庄市高邑县2020-2021学年八年级上学期期末数学试题河北省唐山市滦州市2021-2022学年八年级上学期期末数学试题四川省遂宁市射洪市射洪一中教育联盟学校2022-2023学年九年级上学期期中数学试题河南省驻马店市驿城区第四中学2022-2023学年八年级上学期期中数学试题广东省惠州市光正实验学校2022-2023学年八年级下学期3月月考数学试卷广西壮族自治区河池市大化瑶族自治县2022-2023学年八年级下学期期中数学试题广东省湛江市雷州六中2022-2023学年八年级下学期期中数学试卷(已下线)专题09 二次根式的乘除【知识梳理+专项训练】-2022-2023学年八年级数学下学期期中期末考点大串讲(苏科版)广东省湛江市霞山区滨海学校2022-2023学年八年级下学期期中数学试题(已下线)专题08 二次根式乘除(九大类型)(题型专练)-2023-2024学年八年级数学上册《知识解读·题型专练》(北师大版)
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4 . 下列算式能用平方差公式计算的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-12-10更新
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162次组卷
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6卷引用:数学(江苏扬州A卷)-学易金卷:2022-2023学年七年级下学期期中考前必刷卷
5 . 计算:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e0b5b2761c96a7c9ee5d75d915b380b.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e0b5b2761c96a7c9ee5d75d915b380b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf0a1615db1d3a7d6c4613defbe289e.png)
您最近一年使用:0次
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6 . 计算
的结果是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd3d4690f3bd8ef2411ed3813b3e5fc6.png)
您最近一年使用:0次
2022-10-25更新
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240次组卷
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9卷引用:江苏省扬州市仪征市2021-2022学年七年级下学期期末数学试题
江苏省扬州市仪征市2021-2022学年七年级下学期期末数学试题江苏省南京市南京外国语学校2021-2022学年七年级下学期期中数学试题 陕西省西安市碑林区西北工大附中分校2021-2022学年七年级下学期期末数学试卷 广东省揭阳市揭西县阳夏华侨中学2021-2022学年七年数学下学期期终定心卷1(已下线)八年级数学上学期开学摸底考试卷(苏科版)-2022-2023学年八年级数学考试满分全攻略(苏科版)(已下线)9.4 乘法公式-【帮课堂】2022-2023学年七年级数学下册同步精品讲义(苏科版)(已下线)(培优特训)专项3.3 平方差公式综合高分必刷-2022-2023学年七年级数学下册《同步考点解读·专题训练》(浙教版)(已下线)重难点拓展训练三 利用乘法公式计算-【帮课堂】2022-2023学年七年级数学下册同步精品讲义(苏科版)(已下线)(培优特训)专项9.3 平方差公式综合高分必刷-2022-2023学年七年级数学下册《同步考点解读·专题训练》(苏科版)
名校
7 . 化简求值:已知
,求代数式
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e2a1938ce3743d2a836f5b14e06983.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe309964435819edb12a5bd216c794d.png)
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2022-10-04更新
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334次组卷
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10卷引用:江苏省扬州市江都区实验初级中学2022-2023学年七年级下学期第二次素养体验数学试题
江苏省扬州市江都区实验初级中学2022-2023学年七年级下学期第二次素养体验数学试题【校级联考】山东省菏泽市郓城县2019届中考模拟数学试题(6月份)黑龙江省佳木斯市桦南县实验中学2019年七年级上学期期中数学试题(已下线)【万唯原创】2016年河南省中考数学-面对面河南数学-第一部分第一章2+3陕西省汉中市杨河学校2019~2020学年七年级下学期第一次月考数学试题江苏省泰州市姜堰区励才实验学校2021-2022学年七年级下学期5月月考数学试题江苏省泰州市姜堰区姜堰区城西实验学校2022-2023学年七年级下学期5月月考数学试题江苏省泰州市姜堰区四校联考2022-2023学年七年级下学期5月月考数学试题安徽省阜阳市阜阳实验中学2022-2023学年八年级上学期期中数学试题吉林省长春市南关区第十三中学校2023-2024学年八年级上学期期末数学试题
名校
8 . 先化简再求值:
,其中x满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a812bf539feb748ef793266221a6359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42485aa3d10c6453650799559a7cc8ea.png)
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2022-10-01更新
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151次组卷
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3卷引用:江苏省扬州市江都区华君外国语学校2021-2022学年七年级下学期第二次教学专项调研数学试题
名校
9 . 计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e67cd1f39e910e5ff88e824d627ea2.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e67cd1f39e910e5ff88e824d627ea2.png)
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2022-09-29更新
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259次组卷
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10卷引用:江苏省扬州市华东师范大学广陵实验初级中学2022-2023学年七年级下学期第一次学情检测数学试卷
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10 . 先阅读以下材料,然后解答问题,分解因式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc0be1fb2688cb60546e44e0a787bf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/863abf9d08c5ce3066acdb394a8a6c1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67935a1e43f1bab3657c72094952b9b.png)
;
也可以![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc0be1fb2688cb60546e44e0a787bf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2b4074e5908dd84e37181d94cf5b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c53eef5d11bf688f5b59b8ce1b83a7e3.png)
.
以上分解因式的方法称为分组分解法,
(1)请用分组分解法分解下列因式:
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3786b12f76ceafc9bf3e881f35224da7.png)
②![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba5e68de53b76c67a690aae7f8eab8b.png)
(2)拓展延伸
①若
求x,y的值;
②求当x、y分别为多少时?代数式
有最小的值,最小的值是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc0be1fb2688cb60546e44e0a787bf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/863abf9d08c5ce3066acdb394a8a6c1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67935a1e43f1bab3657c72094952b9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdcb872f8d84fbcb20cbd6ca56dc3a7a.png)
也可以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc0be1fb2688cb60546e44e0a787bf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2b4074e5908dd84e37181d94cf5b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c53eef5d11bf688f5b59b8ce1b83a7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdcb872f8d84fbcb20cbd6ca56dc3a7a.png)
以上分解因式的方法称为分组分解法,
(1)请用分组分解法分解下列因式:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3786b12f76ceafc9bf3e881f35224da7.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba5e68de53b76c67a690aae7f8eab8b.png)
(2)拓展延伸
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0894a5686c6da7ef4c56503b2e7c6064.png)
②求当x、y分别为多少时?代数式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c6133f98d9abb9e34b2a13311adadf6.png)
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