中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.下列式子变形是因式分解的是( )
| A: x2-5x+6=x(x-5)+6 |
| B: x2-5x+6=(x-2)(x-3) |
| C: (x-2)(x-3)=x2-5x+6 |
| D: x2-5x+6=x(x-2)-3(x-2) |
一次做对，真牛！
+5奖励规则>
- 提示1：5Zug5byP5YiG6Kej55qE5a6a5LmJ77yM5oqK5LiA5Liq5aSa6aG55byP5Y+Y5oiQ5Yeg5Liq5Zug5byP55u45LmY55qE5b2i5byP
- 答案：Qg==
6Kej562U77ya4oi1QSxDLETkuI3nrKblkIjlm6DlvI/liIbop6PnmoTlrprkuYk8YnI+5pWF6YCJQg==
本课配套习题挑战模式2/5
单选题
难度系数：
2.下列各组没有公因式的一组是( )
| A: 2x-2y与y-x |
| B: x2-xy与xy-y2 |
| C: 3x+y与x+3y |
| D: 2x+10y与-2y |
一次做对，真牛！
+5奖励规则>
- 提示1：5YWs5Zug5byP55qE5a6a5LmJ77yM5q+P5Liq5Y2V6aG55byP5YWx5ZCM55qE5Zug5byP
- 答案：Qw==
6Kej562U77ya4oi1QeWFrOWboOW8j+S4uu+8iHgtee+8iSxCLHg8c3VwPjI8L3N1cD4teHk9eCh4LXkpLHh5LTxpbWcgd2lkdGg9MjAgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNzMvMUIvckJBQ0UxVElsaW55aFNNTUFBQUJiQS04VUNBMzI4LnBuZyI+PXkoeC15KSzlhazlm6DlvI/kuLrvvIh4LXnvvInvvIxDLOaXoOWFrOWboOW8jyBE77yMMngrMTB5PTLvvIh4KzV577yJ5LiOLTJ55YWs5Zug5byP5Li6Mjxicj7mlYXpgIlD
本课配套习题挑战模式3/5
单选题
难度系数：
3.若m-n=-6，mn=7，则m2n-mn2的值是( )
| A:42 |
| B: -42 |
| C: 13 |
| D: -13 |
一次做对，真牛！
+5奖励规则>
- 提示1：5Zug5byP5YiG6Kej55qE5bqU55So
- 提示2：5o+Q5Y+W5YWs5Zug5byP5rOV
- 答案：Qg==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.下列分解因式正确的是 ( )
| A: 2x2-xy-x=2x(x-y-1) |
| B: -xy2+2xy-3y=-y(xy-2x-3) |
| C: x(x-y)-y(x-y)=(x-y)2 |
| D: x2-x-3=x(x-1)-3 |
一次做对，真牛！
+5奖励规则>
- 提示1：5YWs5Zug5byP55qE5a6a5LmJ77yM5q+P5Liq5Y2V6aG55byP5YWx5ZCM55qE5Zug5byP
- 提示2：5Zug5byP5YiG6Kej55qE5a6a5LmJ
- 答案：Qw==
6Kej562U77ya4oi1QSDvvIwyeDxzdXA+Mjwvc3VwPi14eS14PXgoMngteS0xKUIsIC14eTxzdXA+Mjwvc3VwPisyeHktM3k9LXkoeHktMngrMynvvIxD77yMPGJyPngoeC15KS15KHgteSk977yIeC1577yJ77yIeC1577yJPSh4LXkpPHN1cD4yPC9zdXA+PGJyPkQsIHg8c3VwPjI8L3N1cD4teC0zPXgoeC0xKS0z5LiN5piv5Zug5byP5YiG6KejPGJyPuaVhemAiUM=
本课配套习题挑战模式5/5
单选题
难度系数：
5.计算(-2)10+(-2)11的值为( )
| A: -210 |
| B: -211 |
| C: 210 |
| D: -2 |
一次做对，真牛！
+5奖励规则>
- 提示1：5Zug5byP5YiG6Kej55qE5LiA5Liq5pa55rOV77yM5o+Q5Y+W5YWs5Zug5byP5rOV
- 提示2：5LmY5pa557uT5p6c55qE56ym5Y+3
- 答案：QQ==
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
