A.若x2=1,则
| ||||
B.-
| ||||
C.若代数式
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D.若y=
|
3 | x |
64 |
x+2 | ||
|
x-2 |
2-x |
A.16的算术平方根是-4 | B.25的平方根是5 |
C.1的立方根是±1 | D.-27的立方根是-3 |
A.
| B.
| C.
| D.
|
3 | -8 |
16 |
A.-8 | B.8 | C.-16 | D.16 |
(-2)2 |
3 | -0.001 |
A.8的立方根是±2 |
B.负数没有立方根 |
C.互为相反数的两个数立方根也互为相反数 |
D.立方根是它本身的数是0 |
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