题目内容
计算与化简:
(1)
-
+3
(2)a
-a2
+3
(a>0)
(1)
| 18 |
| 50 |
| 8 |
(2)a
| 8a |
|
| 2a3 |
(1)原式=3
-5
+6
=4
;
(2)原式=2a
-
a
+3a
=
a
.
| 2 |
| 2 |
| 2 |
=4
| 2 |
(2)原式=2a
| 2a |
| 1 |
| 2 |
| 2a |
| 2a |
=
| 9 |
| 2 |
| 2a |
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题目内容
| 18 |
| 50 |
| 8 |
| 8a |
|
| 2a3 |
| 2 |
| 2 |
| 2 |
| 2 |
| 2a |
| 1 |
| 2 |
| 2a |
| 2a |
| 9 |
| 2 |
| 2a |