(x-2)(x-3)/(x+5)(x-7)>0(x-2)(x-3)(x+2)(x+3)>0
问题描述:
(x-2)(x-3)/(x+5)(x-7)>0
(x-2)(x-3)(x+2)(x+3)>0
答
(x-2)(x-3)/(x+5)(x-7)>0
(x-2)(x-3)(x+2)(x+3)>0