题目内容
(1)
-
+(
-2)0+
;
(2)|-2|+(
)-1×(π-
)0-
+(-1)2
| 18 |
| ||||
|
| 3 |
(1-
|
(2)|-2|+(
| 1 |
| 3 |
| 2 |
| 9 |
(1)原式=3
-1-
+1+
-1
=2
-1+1+
-1
=3
-1;
(2)原式=2+3×1-3+1
=5-3+1
=3.
| 2 |
| 2 |
| 2 |
=2
| 2 |
| 2 |
=3
| 2 |
(2)原式=2+3×1-3+1
=5-3+1
=3.
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