题目内容
计算-
×[(-3)2×(
)2-23].
| 3 |
| 2 |
| 2 |
| 3 |
-
×[(-3)2×(
)2-23]
=-
×[9×
-8]
=-
×(4-8)
=-
×[4+(-8)]
=-
×(-4)
=6.
| 3 |
| 2 |
| 2 |
| 3 |
=-
| 3 |
| 2 |
| 4 |
| 9 |
=-
| 3 |
| 2 |
=-
| 3 |
| 2 |
=-
| 3 |
| 2 |
=6.
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计算3
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-
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的结果为( )
| 2 |
| 1 |
| 2 |
| 2 |
| 1 |
| 3 |
| 2 |
| 2 |
A、
| ||||
B、7
| ||||
C、
| ||||
D、3
|