题目内容
计算:
(1)
+
+
)2
(2)4
-2(1+
)+
.
(1)
| 81 |
| 3 | -27 |
(-
|
(2)4
| 3 |
| 3 |
| (-2)2 |
(1)原式=9+(-3)+
,
=6
;
(2)原式=4
-2-2
+2,
=2
.
| 2 |
| 3 |
=6
| 2 |
| 3 |
(2)原式=4
| 3 |
| 3 |
=2
| 3 |
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题目内容
| 81 |
| 3 | -27 |
(-
|
| 3 |
| 3 |
| (-2)2 |
| 2 |
| 3 |
| 2 |
| 3 |
| 3 |
| 3 |
| 3 |