题目内容
计算| 48 |
| 54 |
| 3 |
| 1 | ||
|
分析:先乘除后加减,能合并的要合并同类二次根式,结果需化为最简形式.
解答:解:
-
÷2+(3-
)(1+
)
=4
-
+3+
-
-1
=4
-
+2.
| 48 |
| 54 |
| 3 |
| 1 | ||
|
=4
| 3 |
3
| ||
| 2 |
| 3 |
| 3 |
=4
| 3 |
3
| ||
| 2 |
点评:此题主要考查了二次根式的混合运算,要掌握好运算顺序及运算法则.
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题目内容
计算| 48 |
| 54 |
| 3 |
| 1 | ||
|
| 48 |
| 54 |
| 3 |
| 1 | ||
|
| 3 |
3
| ||
| 2 |
| 3 |
| 3 |
| 3 |
3
| ||
| 2 |