题目内容
计算:(1)(
+
) -(
-
)(2)(
+3
)(2
-3
)
| 45 |
| 18 |
| 32 |
|
| 12 |
| 2 |
| 3 |
| 2 |
(1)原式=3
+3
-4
+
=
-
;
(2)原式=(2
+3
)(2
-3
)=12-18=-6.
| 5 |
| 2 |
| 2 |
| ||
| 2 |
7
| ||
| 2 |
| 2 |
(2)原式=(2
| 3 |
| 2 |
| 3 |
| 2 |
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题目内容
| 45 |
| 18 |
| 32 |
|
| 12 |
| 2 |
| 3 |
| 2 |
| 5 |
| 2 |
| 2 |
| ||
| 2 |
7
| ||
| 2 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |