一道分式方程,
问题描述:
一道分式方程,
【(2x)/(x+2)】-(x/x-2)-【(x+11)/(4-x^2)】=1
我算到x^2-x+7=1,然后下面x就求不出来了,是不是我算错了.
答
Lz应该是算错了【(2x)/(x+2)】-(x/x-2)-【(x+11)/(4-x^2)】=1【(2x)(x-2)/(x+2)(x-2)】-【x(x+2)/(x+2)(x-2)】+【(x+11)/(x^2-4)】=1【(2x^2-4x)/(x^2-4)】-【(x^2+2x)/(x^2-4)】+【(x+11)/(x^2-4)】=12x^...