题目内容
计算:| 3 |
| 6 |
| 2 |
| 48 |
| 3 |
(-
|
| 8 |
| 2 |
| 8 |
|
| 18 |
| 32 |
| 2 |
分析:先把不是最简二次根式的根式化为最简二次根式,进而合并同类二次根式即可.
解答:解:
×
-
=
-
=3
-
=2
;
-
=4
-
=3
;
=
;
×
=
=4;
-
=2
-
=
;
-
+
=3
-4
+
=0.
故答案为:2
;3
;
;4;
;0.
| 3 |
| 6 |
| 2 |
| 18 |
| 2 |
| 2 |
| 2 |
| 2 |
| 48 |
| 3 |
| 3 |
| 3 |
| 3 |
(-
|
| 2 |
| 8 |
| 2 |
| 16 |
| 8 |
|
| 2 |
| ||
| 2 |
3
| ||
| 2 |
| 18 |
| 32 |
| 2 |
| 2 |
| 2 |
| 2 |
故答案为:2
| 2 |
| 3 |
| 2 |
3
| ||
| 2 |
点评:考查二次根式的运算;在加减的过程中,有同类二次根式的要合并;相乘的时候,被开方数简单的直接让被开方数相乘,再化简;较大的也可先化简,再相乘.
练习册系列答案
相关题目