题目内容
计算与化简:
(1)2
-3
-
(2)
+(1-
)0
(3)(3+
)2-(2-
)(2+
).
(1)2
| 18 |
| 2 |
|
(2)
2
| ||||
|
| 3 |
(3)(3+
| 2 |
| 3 |
| 3 |
(1)原式=6
-3
-
=
;
(2)原式=4+1+1=6;
(3)原式=9+6
+2-(4-3)
=11+6
-1
=10+6
.
| 2 |
| 2 |
| ||
| 2 |
5
| ||
| 2 |
(2)原式=4+1+1=6;
(3)原式=9+6
| 2 |
=11+6
| 2 |
=10+6
| 2 |
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