题目内容
计算:
(1)
-
+3
;
(2)(
+2)(
-2)-
+4
.
(1)
| 18 |
| 50 |
| 8 |
(2)(
| 3 |
| 3 |
| 8 |
|
(1)原式=3
-5
+6
=4
;
(2)原式=(3-4)×2
+
=-2
+
=-
.
| 2 |
| 2 |
| 2 |
| 2 |
(2)原式=(3-4)×2
| 2 |
| 2 |
| 2 |
| 2 |
| 2 |
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题目内容
| 18 |
| 50 |
| 8 |
| 3 |
| 3 |
| 8 |
|
| 2 |
| 2 |
| 2 |
| 2 |
| 2 |
| 2 |
| 2 |
| 2 |
| 2 |