题目内容
计算:
(1)
-
+
-
;
(2)(3+
)(3-
)-(
-1)2.
(1)
| 8 |
| 2 | ||
|
| 18 |
| 32 |
(2)(3+
| 5 |
| 5 |
| 3 |
(1)原式=2
-
+3
-4
=0;
(2)原式=32-(
)2-(3-2
+1)
=9-5-3+2
-1
=2
.
| 2 |
| 2 |
| 2 |
| 2 |
=0;
(2)原式=32-(
| 5 |
| 3 |
=9-5-3+2
| 3 |
=2
| 3 |
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题目内容
| 8 |
| 2 | ||
|
| 18 |
| 32 |
| 5 |
| 5 |
| 3 |
| 2 |
| 2 |
| 2 |
| 2 |
| 5 |
| 3 |
| 3 |
| 3 |