题目内容
计算:
(1)|-1|-
+(π-3)0+2-2
(2)
+
-4
.
(1)|-1|-
| 4 |
(2)
| 18 |
| ||
|
|
(1)原式=1-2+1+
=
;
(2)原式=3
+
-4×
=3
+2-2
+1-
=3.
| 1 |
| 4 |
=
| 1 |
| 4 |
(2)原式=3
| 2 |
(
| ||||
(
|
| 1 |
| 4 |
| 2 |
=3
| 2 |
| 2 |
| 2 |
=3.
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