题目内容
计算:
(1)
-
(2)
×
.
(1)
| 8a |
| 32a |
(2)
| 3 |
| 2 |
| 20 |
| 1 |
| 3 |
| 48 |
(1)原式=2
-4
=-2
;
(2)原式=
×2
×
×4
=4
.
| 2a |
| 2a |
=-2
| 2a |
(2)原式=
| 3 |
| 2 |
| 5 |
| 1 |
| 3 |
| 3 |
=4
| 15 |
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题目内容
| 8a |
| 32a |
| 3 |
| 2 |
| 20 |
| 1 |
| 3 |
| 48 |
| 2a |
| 2a |
| 2a |
| 3 |
| 2 |
| 5 |
| 1 |
| 3 |
| 3 |
| 15 |