题目内容
计算或化简:(1)
+tan60°+(-
)0;
(2)
-
.
| 3 | ||
|
| 2 |
| 3 |
(2)
| 2m |
| m-2 |
| 4 |
| m-2 |
(1)原式=
+tan60°+(-
)0
=
+
+1
=2
+1;
(2)原式=
-
=
=2.
| 3 | ||
|
| 2 |
| 3 |
=
| 3 |
| 3 |
=2
| 3 |
(2)原式=
| 2m |
| m-2 |
| 4 |
| m-2 |
=
| 2m-4 |
| m-2 |
=2.
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