1 . 如图,抛物线
与
轴交于
,
两点,与
轴交于点
,抛物线的顶点为
,连接BC,P为线段BC上的一个动点
不与B,C重合),过点P作
轴,交抛物线于点
,交
轴于点
.
![](https://img.xkw.com/dksih/QBM/2022/11/12/3108120402452480/3109680588300288/STEM/0fe11a23473b4671a86710f8a409f97e.png?resizew=450)
(1)求抛物线的解析式;
(2)当
时,求点
的坐标;
(3)连接CD,BD,CF,BF,当
的面积等于
的面积时(点
与点
不重合),求点
的坐标;
(4)在(3)的条件下,在
轴上是否存在点
,使
为等腰三角形?若存在,请直接写出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6ff81aedbefa935da289dc632e78eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4218690b49de906a22dda72c578956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62855ff21228ecea8e28fd0fbeb814ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f57b9464c57e18c4ceb2056007fd9a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b749baee563b6fd88196c75d29fc9797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/2022/11/12/3108120402452480/3109680588300288/STEM/0fe11a23473b4671a86710f8a409f97e.png?resizew=450)
(1)求抛物线的解析式;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b308a03141e3ca7123f03a18157116.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)连接CD,BD,CF,BF,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4ce3f962c91f0d3c7b998b5fbb37b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73636989e83905f8800a865c2b608c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(4)在(3)的条件下,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e87b2f781cafa7989d81f9bf8c42b150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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2022-11-14更新
|
107次组卷
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3卷引用:湖北省鄂州市鄂城区2022-2023学年九年级上学期期中质量监测数学试题
2 . 为了响应鄂州市“创建全国文明典范城市”号召,梁湖社区不断美化社区环境,拟在一块矩形空地上修建绿色植物园,其中一边靠墙,可利用的墙长不超过18m,另外三边用40m长的栅栏围成.如图,设矩形
空地中,垂直于墙的边
为
,面积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/a65c3f6e-71df-4132-8b5a-4eaacbbd1f60.png?resizew=167)
(1)求
与
之间的函数关系式,并写出自变量
的取值范围;
(2)若矩形空地的面积为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7396e0bfef12ce010a47ebce542762e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a5196f619e61d17842c31ff1cd2bb1c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/a65c3f6e-71df-4132-8b5a-4eaacbbd1f60.png?resizew=167)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若矩形空地的面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb92c9032804326713c7b4feea53f40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2022-11-14更新
|
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3卷引用:湖北省鄂州市鄂城区2022-2023学年九年级上学期期中质量监测数学试题
3 . 如图,抛物线
与x轴交于
、
两点,与y轴交于点
,连接AC、BC.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/14/d8942af2-ff20-4a2b-aaed-1d5055411020.png?resizew=352)
(1)求抛物线的表达式;
(2)D为抛物线上第一象限内一点,求
面积的最大值;
(3)点P是抛物线上的一动点,当
时,求点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/774480361088aa3198c7bc3148fa23fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ac227415188548180ea445fc383647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f845a7c69953429bd6228ac76f6848ff.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/14/d8942af2-ff20-4a2b-aaed-1d5055411020.png?resizew=352)
(1)求抛物线的表达式;
(2)D为抛物线上第一象限内一点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f0dadf037efedc90b39c57a6880a1a.png)
(3)点P是抛物线上的一动点,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc96ca3a89fe01107fd365aed95c725f.png)
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2022-11-11更新
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6卷引用:湖北省黄冈市部分学校期中联考2022—2023学年九年级上学期数学试题
湖北省黄冈市部分学校期中联考2022—2023学年九年级上学期数学试题湖北省黄冈市红安县2022--2023学年九年级上学期期中考试数学试卷山东省淄博市临淄区2022-2023学年九年级上学期期末数学试题(已下线)(挑战压轴)专项2.10 二次函数中角度有关问题(三大类)-2022-2023学年九年级数学下册《同步考点解读·专题训练》(北师大版)广东省广州天省实验学校2023-2024学年九年级上学期月考数学试题广东省汕头市濠江区2023-2024学年九年级上学期期末数学试题
4 . 如图,用一段长为
的篱笆围成一个一边靠墙的矩形菜园,墙长为
,设这个菜园垂直于墙的一边
的长为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/c511e138-f8b6-4b4a-b794-6ff37806c8fb.png?resizew=185)
(1)用含有
的式子表示
,并求出
的取值范围;
(2)若菜园的面积为
,求
的长;
(3)这个矩形的长、宽各为多少时,菜园的面积最大,最大面积是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1611d15c7e1e4ab4a4a61537b3989d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d4166fee97516ad1b1d4759a8e4ce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3bde6ef2ee5b749b4d48d706543cdb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/c511e138-f8b6-4b4a-b794-6ff37806c8fb.png?resizew=185)
(1)用含有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若菜园的面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a2ff3b4e327d32d7505fbb40d47669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)这个矩形的长、宽各为多少时,菜园的面积最大,最大面积是多少?
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名校
5 . 如图,
是一块边长为8m的正方形苗圃,园林部门拟将其改造为矩形
的形状,其中点E在
边上,点G在
的延长线上,
,设
的长为xm.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/0e34f8b9-2255-4830-8d8d-18c9544d1411.png?resizew=203)
(1)若改造后的矩形苗圃
的面积与原正方形苗圃
的面积相等,求此时BE的长;
(2)当x为何值时改造后的矩形苗圃
的面积最大?并求出最大面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7830761403fcd1825ede185affdc918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/0e34f8b9-2255-4830-8d8d-18c9544d1411.png?resizew=203)
(1)若改造后的矩形苗圃
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)当x为何值时改造后的矩形苗圃
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
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6 . 王师傅用一段长40m的篱笆和长15m的墙
,围成一个矩形的菜园,设平行于墙的一边
的长为xm.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/36ccb301-2ffb-44bd-9a7b-310aa816e14c.png?resizew=327)
(1)如图1,如果矩形菜园的一边靠墙
,另外三边由篱笆
围成.
①当菜园面积为150
时,求
的长;
②直接写出能围成矩形的最大面积是__________
.
(2)如图2,如果矩形菜园的一边由墙
和一节篱笆
构成,另三边由篱笆
围成,当菜园面积是150
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/36ccb301-2ffb-44bd-9a7b-310aa816e14c.png?resizew=327)
(1)如图1,如果矩形菜园的一边靠墙
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
①当菜园面积为150
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d7e680da2ccf8ca16e19aa8a02a49b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
②直接写出能围成矩形的最大面积是__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d7e680da2ccf8ca16e19aa8a02a49b5.png)
(2)如图2,如果矩形菜园的一边由墙
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d7e680da2ccf8ca16e19aa8a02a49b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
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22-23九年级·全国·单元测试
名校
7 . 已知:如图,抛物线
经过原点
和点
,
为抛物线上的一个动点,过点
作
轴的垂线,垂足为
,并与直线
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/ba66d597-62d5-4cd7-89d7-52e1ff6c05b8.png?resizew=390)
(1)求抛物线的解析式;
(2)当点P在直线OA上方时,求线段PC的最大值;
(3)过点A作AD⊥x轴于点D,在抛物线上是否存在点P,使得以P、A、C、D四点为顶点的四边形是平行四边形?若存在,求m的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22106baba401cfaef881253e49c3c777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1a9821a00b71f6b7d7a76d91b3f810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0fbd2dd3beb7f5d162211a14c86b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/361610314e9bb5580993bd17d66b629c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/ba66d597-62d5-4cd7-89d7-52e1ff6c05b8.png?resizew=390)
(1)求抛物线的解析式;
(2)当点P在直线OA上方时,求线段PC的最大值;
(3)过点A作AD⊥x轴于点D,在抛物线上是否存在点P,使得以P、A、C、D四点为顶点的四边形是平行四边形?若存在,求m的值;若不存在,请说明理由.
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2022-10-31更新
|
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3卷引用:湖北省黄冈市浠水县方铺中学2022-2023学年九年级上学期期中考试数学试卷
湖北省黄冈市浠水县方铺中学2022-2023学年九年级上学期期中考试数学试卷(已下线)第22章 二次函数(单元提升卷)-2022-2023学年九年级数学考试满分全攻略(人教版)广西壮族自治区南宁市青秀区第四十七中学2023-2024学年九年级上学期期中数学试题
8 . 已知点
,若抛物线
与线段
有2个不同的交点,则a的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afdec9518797c1286e9f89f918fe0a01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a279e58ccc14388db8f8f8fdaa370da7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() | D.![]() ![]() |
您最近一年使用:0次
2022-10-29更新
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2卷引用:湖北省武汉市杨春湖实验学校2022-2023学年九年级上学期10月月考数学试卷
9 . 如图,抛物线
与
轴交于
,
两点,与
轴交于点
,直线
经过点
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/3e261231-40d1-4e9b-90f4-10324a09e6bd.png?resizew=154)
(1)求抛物线的表达式.
(2)直线
(其中
)与线段
交于点
,与抛物线交于点
,连接
,当线段
长度最大时,求证:四边形
是平行四边形.
(3)在(2)的条件下,连接
,过点
的直线与抛物线交于点
,若
.求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812eed46a589bde8b7c78a81a8cf9b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/3e261231-40d1-4e9b-90f4-10324a09e6bd.png?resizew=154)
(1)求抛物线的表达式.
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d71f015144ffaf1faec94a259b4a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9059219044592024f63637984f86be30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af77beff7c8589189f6de735162c2b57.png)
(3)在(2)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fad983054004ef90db511b432e0517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
您最近一年使用:0次
2022-10-27更新
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187次组卷
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5卷引用:湖北省武汉市蔡甸区2023-2024学年九年级上学期月考数学试题
名校
10 . 有长为30米的篱笆,一面利用墙(墙的最大可用长度为10米),围成中间隔有一道篱笆(平行于
)的矩形花圃,设花圃的一边
为
米,面积为
平方米.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/ccd2203a-ae36-4e06-bffa-7ba755f2593b.png?resizew=278)
(1)如果要围成面积为63平方米的花圃,
的长是多少?
(2)求
与
的函数关系式,写出自变量的取值范围,直接写出面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcf9bfbf771cb6118f8e631724314e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/ccd2203a-ae36-4e06-bffa-7ba755f2593b.png?resizew=278)
(1)如果要围成面积为63平方米的花圃,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcf9bfbf771cb6118f8e631724314e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
您最近一年使用:0次
2022-10-24更新
|
353次组卷
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3卷引用:湖北省黄冈市浠水县丁司当石头中学2022-2023学年九年级上学期期中数学试题