题目内容
计算:(1)(
)2-
+
+
.(2)|
-
|-|2-
|-|
-1|.
| 3 |
| 16 |
| 3 | -8 |
| (-2)2 |
| 2 |
| 3 |
| 3 |
| 3 |
(1)(
)2-
+
+
=3-4-2+2
=5-6
=-1;
(2)|
-
|-|2-
|-|
-1|
=
-
-(2-
)-(
-1)
=
-
-2+
-
+1
=
-
-1.
| 3 |
| 16 |
| 3 | -8 |
| (-2)2 |
=3-4-2+2
=5-6
=-1;
(2)|
| 2 |
| 3 |
| 3 |
| 3 |
=
| 3 |
| 2 |
| 3 |
| 3 |
=
| 3 |
| 2 |
| 3 |
| 3 |
=
| 3 |
| 2 |
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