题目内容
计算与化简:
(1)(
+
)÷
(2)
x
-x2
+6x
.
(1)(
| 48 |
| 1 |
| 4 |
| 12 |
| 27 |
(2)
| 2 |
| 3 |
| 9x |
|
|
(1)原式=(4
+
)÷3
=
÷3
=
;
(2)原式=2x
-
+
x
=(
x-1)
.
| 3 |
| 1 |
| 2 |
| 3 |
| 3 |
| 9 |
| 2 |
| 3 |
| 3 |
| 3 |
| 2 |
(2)原式=2x
| x |
| x |
| 2 |
| 3 |
| x |
| 8 |
| 3 |
| x |
练习册系列答案
相关题目