1 . 计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05db635934c47594006a55c2d93e7e22.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ec6867652e3ca1c2f7fbecea33b4304.png)
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名校
2 . 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)
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(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)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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3 . 下列运算中正确的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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6卷引用:江苏省无锡市江阴中学2017-2018学年九年级(上)调研数学试卷
江苏省无锡市江阴中学2017-2018学年九年级(上)调研数学试卷【区级联考】广东省广州市天河区2018-2019学年八年级上学期期末考试数学试题广东省广州市第十六中学2022-2023学年八年级上学期期末数学卷河南省郑州市中牟县郑州东枫外国语学校2022-2023学年七年级上学期期末数学试题(已下线)学易密卷:段考模拟君之2018-2019学年八年级数学上学期期末原创卷A卷(四川)【测试范围:华师大版八上全册】广东省惠州市北大培文大亚湾实验学校2023-2024学年八年级上学期(贯通班)月考数学试题
2022·四川成都·二模
4 . 已知
,则
的值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d2c67b2f30bfc30f4c9f0b71c16f82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/477b33d822e1be9469864f8fce077da7.png)
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江苏省镇江市句容市崇明中学2022-2023学年七年级上学期期末数学试题(已下线)2022年四川省成都市双流中学实验学校中考数学二诊试题(已下线)专题1.14 平方差公式(基础篇)(专项练习)-2022-2023学年七年级数学下册基础知识专项讲练(北师大版)(已下线)专题8.20 平方差公式(基础篇)(专项练习)-2022-2023学年七年级数学下册基础知识专项讲练(沪科版)(已下线)专题9.11 平方差公式(基础篇)(专项练习)-2022-2023学年七年级数学下册基础知识专项讲练(苏科版)(已下线)专题3.17 平方差公式(基础篇)(专项练习)-2022-2023学年七年级数学下册基础知识专项讲练(浙教版)
5 . 先化简,再求值:
,其中
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acf64d053e827c8509183e9cfe8ce92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
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6 . 若
,则代数式
的值是_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69170cf03d5eeb228da9556dd2ed4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
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5卷引用:江苏省南京市高淳区2019-2020学年七年级下学期期末数学试题
江苏省南京市高淳区2019-2020学年七年级下学期期末数学试题(已下线)第5课时 乘法公式(基础练)-2020-2021学年八年级数学上册十分钟同步课堂专练(华师大版)吉林省长春市朝阳区长春高新技术产业开发区尚德学校2022-2023学年八年级上学期期中数学试题(已下线)人教版(2012)八年级上册第十四章 整式的乘法与因式分解 检测卷(已下线)专题04 整式的乘法2(知识串讲 热考题型 真题训练)-2023-2024学年八年级数学上学期期中期末考点归纳满分攻略讲练(人教版)
名校
7 . 先化简,再求值:
,其中
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1728aa96dfde3b958aa4313277b3d61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c98a7f3a8bf384b1dfc1d34aebd46d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50866229ec5a3640fb250f9bd2192b3.png)
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8 . 下列式子中,能用平方差公式运算的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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9 . 设
,
,当t为___________ 时,代数式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a95d32c434bc342b29b5a14dacce4165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4685659400781ed4487ebca746e821df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b14ecda3dbd0f960c0706f6e46567de.png)
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10 . 计算
的结果是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd3d4690f3bd8ef2411ed3813b3e5fc6.png)
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