题目内容
(1)化简:(
-
)÷(1+
);
(2)计算:
+|2
-3
|÷
.
| 4 |
| a2-2a |
| a |
| a-2 |
| 2 |
| a |
(2)计算:
| 8 |
| 3 |
| 2 |
| 6 |
原式=[
-
]×
=
×
=-1;
原式=2
+(3
-2
)÷
=2
+
-
=
+
.
| 4 |
| a(a-2) |
| a2 |
| a(a-2) |
| a |
| a+2 |
=
| (2-a)(2+a) |
| a(a-2) |
| a |
| a+2 |
=-1;
原式=2
| 2 |
| 2 |
| 3 |
| 6 |
=2
| 2 |
| 3 |
| 2 |
=
| 2 |
| 3 |
练习册系列答案
相关题目