问题:
解下列方程:
(1)
1
x+1
-
2
1-x
=
4
x2-1
;
(2)x 2+6x-7=0.
解下列方程:
(1)
-
=
;
(2)x 2+6x-7=0.
(1)
1 |
x+1 |
2 |
1-x |
4 |
x2-1 |
(2)x 2+6x-7=0.
参考答案: