题目内容
化简分式：
+
-
| 5x |
| x2+x-6 |
| 2x-5 |
| x2-x-12 |
| 7x-10 |
| x2-6x+8 |
原式=
+
-
=
=
．
| 5x |
| (x+3)(x-2) |
| 2x-5 |
| (x+3)(x-4) |
| 7x-10 |
| (x-2)(x-4) |
=
| 5x(x-4)+(2x-5)(x-2)-(7x-10)(x+3) |
| (x+3)(x-2)(x-4) |
=
| -40x+40 |
| (x+3)(x-2)(x-4) |
练习册系列答案
相关题目