题目内容
计算题:
(1)3
+
-2
-3
;
(2)
-(2+
)2;
(3)
-
-(
)0.
(1)3
| 2 |
| 3 |
| 2 |
| 3 |
(2)
| 32 |
| 2 |
(3)
| 6 | ||
|
| 18 |
| 1 |
| 2 |
(1)3
+
-2
-3
=(3
-2
)+(
-3
)
=
-2
;
(2)
-(2+
)2
=4
-[4+4
+(
)2]
=4
-4-4
-2
=-6;
(3)
-
-(
)0
=
-3
-1
=3
-3
-1
=-1.
| 2 |
| 3 |
| 2 |
| 3 |
=(3
| 2 |
| 2 |
| 3 |
| 3 |
=
| 2 |
| 3 |
(2)
| 32 |
| 2 |
=4
| 2 |
| 2 |
| 2 |
=4
| 2 |
| 2 |
=-6;
(3)
| 6 | ||
|
| 18 |
| 1 |
| 2 |
=
6
| ||
| 2 |
| 2 |
=3
| 2 |
| 2 |
=-1.
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