题目内容
计算
(1)|-
|+
+
(2)(-8ab)•(
a2b)
(1)|-
| 1 |
| 2 |
(-
|
| 3 | -8 |
(2)(-8ab)•(
| 3 |
| 4 |
(1)原式=
+
+2=1+2=3;
(2)原式=(-8)×
a3b2=-6a3b2.
| 1 |
| 2 |
| 1 |
| 2 |
(2)原式=(-8)×
| 3 |
| 4 |
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题目内容
| 1 |
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(-
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| 3 | -8 |
| 3 |
| 4 |
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| 2 |
| 1 |
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| 4 |