本课配套习题挑战模式1/5
单选题
难度系数:
1.计算(-3x2)·2x3的结果是( )
A: -6x5 |
B: -3x5 |
C: 2x5 |
D: 6x5 |
一次做对,真牛!
+5奖励规则>
- 提示1:5Y2V6aG55byP5LmY5Lul5Y2V6aG55byP77yM57O75pWw5LiO5ZCM5bqV5bmC5YiG5Yir55u45LmY77yM5b6X5Yiw55qE57uT5p6c5L2c5Li656ev55qE5q+P5LiA6aG5
- 答案:QQ==
6Kej562U77ya4oi1KC0zeDxzdXA+Mjwvc3VwPinCtzI8aW1nIHdpZHRoPTE1IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzNFL0E1L3JCQUNKbFRJa2wtRDl6U09BQUFCT2pxOUhwODA0MC5wbmciPj08aW1nIHdpZHRoPTMzIGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzczLzE5L3JCQUNFMVRJa2wtUkprSE1BQUFCZUc4a1Q0dzk5My5wbmciPjxicj7mlYXpgIlB
本课配套习题挑战模式2/5
单选题
难度系数:
2.下列运算正确的是( )
A: -3(x-1)=-3x-1 |
B: -3(x-1)=-3x+1 |
C: -3(x-1)=-3x-3 |
D: -3(x-1)=-3x+3 |
一次做对,真牛!
+5奖励规则>
- 提示1:5Y2V6aG55byP5LmY5Lul5aSa6aG55byP562J5LqO5Y2V6aG55byP5LiO5aSa6aG55byP55qE5q+P5LiA6aG55YiG5Yir55u45LmY77yM5oqK5LmY56ev55u45Yqg
- 答案:RA==
6Kej562U77ya4oi1LTMoeC0xKT0tM3grMzxicj7mlYXpgIlE
本课配套习题挑战模式3/5
单选题
难度系数:
3.
若a3(3an-2am+4ak)=3a9—2+4a4,则m,n,k的值分别为( )
A: 6,3,1 |
B: 3,6,1 |
C: 2,1,3 |
D: 2,3,1 |
一次做对,真牛!
+5奖励规则>
- 提示1:PHA+5Y2V6aG55byP5LmY5Lul5aSa6aG55byP562J5LqO5Y2V6aG55byP5LiO5aSa6aG55byP55qE5q+P5LiA6aG55YiG5Yir55u45LmY77yM5oqK5LmY56ev55u45YqgPC9wPg==
- 答案:Qg==
PHA+6Kej562U77ya4oi1YTxzdXA+Mzwvc3VwPigzYTxzdXA+bjwvc3VwPi0yYTxzdXA+bTwvc3VwPis0YTxzdXA+azwvc3VwPik9MzxpbWcgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zRS9FMy9yQkFDSjFUSWttbkRzNGlhQUFBRG11MFJ2WncwNDAucG5nIiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzNFL0UzL3JCQUNKMVRJa21uRHM0aWFBQUFEbXUwUnZadzA0MC5wbmciIHdpZHRoPSIyNTUiIGhlaWdodD0iMjEiPjxicj7iiLRuPTYsbT0zLGs9MTsg5oyJ6aKY5Lit6aG65bqP5Y2zbT0z77yMbj0277yMaz0xPGJyPuaVhemAiUI8YnI+PC9wPg==
本课配套习题挑战模式4/5
单选题
难度系数:
4.适合2x(x-1)-x(2x-5)=12的x的值为( )
A: 2 |
B: 1 |
C:C3 |
D: 4 |
一次做对,真牛!
+5奖励规则>
- 提示1:5Y2V6aG55byP5LmY5Lul5aSa6aG55byP562J5LqO5Y2V6aG55byP5LiO5aSa6aG55byP55qE5q+P5LiA6aG55YiG5Yir55u45LmY77yM5oqK5LmY56ev55u45Yqg
- 答案:RA==
6Kej562U77ya4oi1MngoeC0xKS14KDJ4LTUpPTI8aW1nIHdpZHRoPTE4NiBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9BQS8xRS9yQkFDRkZUSWtteVROdDRIQUFBQ2FINmVtRkU1MjUucG5nIj48YnI+4oi0eD00PGJyPuaVhemAiUQ=
本课配套习题挑战模式5/5
单选题
难度系数:
5.下列等式中,正确的是 ( )①3a3·4a4=7a12②4m5·3m2=12m10③x2·x·x5=x8 ④(-3x)·2xy-x2y=-7x2y
A: ①② |
B: ②③ |
C: ③④ |
D: ①③ |
一次做对,真牛!
+5奖励规则>
- 提示1:5ZCM5bqV5bmC55u45LmY77yM5bqV5pWw5LiN5Y+Y77yM5oyH5pWw55u45Yqg
- 提示2:5Y2V6aG55byP5LmY5Lul5Y2V6aG55byP77yM57O75pWw5LiO5ZCM5bqV5bmC5YiG5Yir55u45LmY77yM5b6X5Yiw55qE57uT5p6c5L2c5Li656ev55qE5q+P5LiA6aG5
- 答案:Qw==
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