题目内容
计算:
(1)
÷
-
+
(2)(3+2
)2-(4+
)(4-
).
(1)
| 24 |
| 3 |
| 6 | ||
|
| 32 |
(2)(3+2
| 5 |
| 7 |
| 7 |
(1)原式=2
-3
+4
=3
;
(2)原式=9+12
+20-16+7
=20+12
.
| 2 |
| 2 |
| 2 |
=3
| 2 |
(2)原式=9+12
| 5 |
=20+12
| 5 |
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题目内容
| 24 |
| 3 |
| 6 | ||
|
| 32 |
| 5 |
| 7 |
| 7 |
| 2 |
| 2 |
| 2 |
| 2 |
| 5 |
| 5 |