题目内容
计算:
(1)
-
+
;
(2)(
+
)(
-
)-(
-1)2.
(1)
| 27 |
|
| 12 |
(2)(
| 3 |
| 2 |
| 3 |
| 2 |
| 2 |
(1)原式=3
-
+2
=
;
(2)原式=3-2-(2-2
+1)=2
-2.
| 3 |
| 1 |
| 3 |
| 3 |
| 3 |
| 14 |
| 3 |
| 3 |
(2)原式=3-2-(2-2
| 2 |
| 2 |
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题目内容
| 27 |
|
| 12 |
| 3 |
| 2 |
| 3 |
| 2 |
| 2 |
| 3 |
| 1 |
| 3 |
| 3 |
| 3 |
| 14 |
| 3 |
| 3 |
| 2 |
| 2 |