配套习题-用因式分解法解一元二次方程 -【青果学院】

本课配套习题挑战模式1/5

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单选题

难度系数：

1.方程(x－16)(x＋8)＝0的根是()

A: x₁＝－16，x₂＝8

B: x₁＝16，x₂＝－8

C: x₁＝16，x₂＝8

D: x₁＝－16，x₂＝－8

提示1：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
答案：Qg==
6Kej562U77yaPGltZyB3aWR0aD04IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzNFL0VBL3JCQUNKMVRJbkpPVDNzWTRBQUFBeFlUU1IzQTY4My5wbmciPih477yNMTYpKHjvvIs4Ke+8nTA8YnI+4oi0eDxzdWI+MTwvc3ViPu+8nTE277yMeDxzdWI+Mjwvc3ViPu+8ne+8jTg8YnI+5pWF6YCJQg==

本课配套习题挑战模式2/5

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单选题

难度系数：

2.方程5x(x＋3)＝3(x＋3)解为()

A: x₁＝，x₂＝3

B: x＝

C: x₁＝－，x₂＝－3

D: x₁＝，x₂＝－3

提示1：5o+Q5Y+W5YWs5Zug5byP5rOV6L+b6KGM5Zug5byP5YiG6Kej
答案：RA==
6Kej562U77ya4oi1IDV4KHjvvIszKe+8nTMoeO+8izMp5Zug5byP5YiG6Kej5Li6PGJyPiA8aW1nIHdpZHRoPTk2IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzczLzIwL3JCQUNFMVRJbkphU2FJYlVBQUFDSURlRXZkRTg0MC5wbmciPj0wPGJyPjxicj7iiLTljp/mlrnnqIvnmoTkuKTkuKrop6PkuLp4PHN1Yj4xPC9zdWI+77ydPGltZyB3aWR0aD0xNiBoZWlnaHQ9NDAgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zRS9BQy9yQkFDSmxUSW5KYWpHLVJSQUFBQlpxZWctbm81NjIucG5nIj7vvIx4PHN1Yj4yPC9zdWI+77yd77yNMzxicj4=

本课配套习题挑战模式3/5

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单选题

难度系数：

3.方程(x－1)²－4(x＋2)²＝0的根为()

A: x₁＝1，x₂＝－5

B: x₁＝－1，x₂＝－5

C: x₁＝1，x₂＝5

D: x₁＝－1，x₂＝5

提示1：5bmz5pa55beu5YWs5byP6L+b6KGM5Zug5byP5YiG6KejPGltZyB3aWR0aD0zOSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zRS9FQi9yQkFDSjFUSW5KblFOUFpGQUFBQm5LZDJNbDg2NzgucG5nIj49PGltZyB3aWR0aD04OSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC83My8yMC9yQkFDRTFUSW5KblRqTzZXQUFBQ0RUSFdKT2M5MzUucG5nIj4=
答案：Qg==
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

本课配套习题挑战模式4/5

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单选题

难度系数：

4.已知三角形两边长为4和7，第三边的长是方程x²－16x＋55＝0的一个根，则第三边长是( )

A: 5

B: 5或11

C: 6

D: 11

提示1：5LiJ6KeS5b2i5Lik6L655LmL5ZKM5aSn5LqO56ys5LiJ6L65
提示2：5Y2B5a2X55u45LmY5rOV5YiG6Kej5Zug5byP
答案：QQ==
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

本课配套习题挑战模式5/5

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单选题

难度系数：

5.三角形的两边长分别是3和6，第三边是方程

的解，则这个三角形的周长是（）

A: 11

B: 13

C: 11或13

D: 11和13

提示1：5LiJ6KeS5b2i5Lik6L655LmL5ZKM5aSn5LqO56ys5LiJ6L65
提示2：5Y2B5a2X55u45LmY5rOV5YiG6Kej5Zug5byP
答案：Qg==
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本课配套习题挑战模式1/5

本课配套习题挑战模式2/5

本课配套习题挑战模式3/5

本课配套习题挑战模式4/5

本课配套习题挑战模式5/5

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