题目内容
计算:
-2-1+|
-2|-3tan30°+(-1)0.
| 12 |
| 3 |
原式=2
-
+2-
-3×
+1
=2
-
+2-
-
+1
=-
+3
=2
.
| 3 |
| 1 |
| 2 |
| 3 |
| ||
| 3 |
=2
| 3 |
| 1 |
| 2 |
| 3 |
| 3 |
=-
| 1 |
| 2 |
=2
| 1 |
| 2 |
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