解不等式:x2-2x-24/x2-7x+12>-2RT =
问题描述:
解不等式:x2-2x-24/x2-7x+12>-2
RT =
答
答:
(x^2-2x-24) /(x^2-7x+12)>-2
(x-6)(x+4) / [ (x-3)(x-4) ]>-2
1)
(x-3)(x-4)