题目内容
计算:
①(π-1)0+(-
)-1+|5-
|-2
②
+
(
-
)+
.
①(π-1)0+(-
| 1 |
| 2 |
| 27 |
| 3 |
②
| 2 | ||
|
| 3 |
| 3 |
| 6 |
| 8 |
(1)原式=1-2+3
-5-2
=
-6;
(2)原式=
+3-3
+2
=3.
| 3 |
| 3 |
| 3 |
(2)原式=
| 2 |
| 2 |
| 2 |
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