题目内容
计算:
=
1+
| ||||
1-
|
2
| 4 |
| 5 |
2
.| 4 |
| 5 |
分析:繁分式化简应先从每个小分数化简,一步步进行.
解答:解:原式=
=
=
=
×
=
=2
.
1+
| ||
1-
|
1+
| ||
1-
|
| ||
|
| 8 |
| 5 |
| 7 |
| 4 |
| 14 |
| 5 |
| 4 |
| 5 |
点评:在化简时要一步步进行,不可马虎.
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