A.
| B.
| C.
| D.±
|
4 |
3 | 8 |
9 |
3 | -2|a|+9 |
A.±5 | B.5 | C.-5 | D.不存在 |
3 | -8 |
A.-2 | B.±2 | C.2 | D.不存在 |
A.-0.064的立方根是0.4 | B.-9的平方根是±3 | |||
C.0.1的立方根是0.0001 | D.5的立方根是
|
3 |
2 |
3 | 3 |
3 | 2 |
A.(1),(3) | B.(2),(3) | C.(2),(4) | D.(1),(2),(3) |
3 | 1.993 |
3 | 19.93 |
3 | 1993 |
3 | -0.01993 |
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