题目内容
计算:(| 48 |
| 1 |
| 4 |
| 12 |
| 27 |
分析:先把各个二次根式化简成最简二次根式后计算.
解答:解:(
+
)÷
=(4
+
)÷3
=
×
=
.
| 48 |
| 1 |
| 4 |
| 12 |
| 27 |
| 3 |
| ||
| 2 |
| 3 |
=
9
| ||
| 2 |
| 1 | ||
3
|
| 3 |
| 2 |
点评:在二次根式的混合运算中,要掌握好运算顺序及各运算律.
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题目内容
计算:(| 48 |
| 1 |
| 4 |
| 12 |
| 27 |
| 48 |
| 1 |
| 4 |
| 12 |
| 27 |
| 3 |
| ||
| 2 |
| 3 |
9
| ||
| 2 |
| 1 | ||
3
|
| 3 |
| 2 |