(x²-5x-17/-x²+x+2x-2)>1 解这个不等式
问题描述:
(x²-5x-17/-x²+x+2x-2)>1 解这个不等式
(x²-5x-17/-x²+x+2x-2)>1 -x²+x+2x-2分之x²-5x-17 -x²+x+2x-2是分母 x²-5x-17是分子.十万火急!要在今天之内给出答案啊!
答
(x²-5x-17/-x²+x+2x-2)>1
[x²-5x-17-(-x²+x+2x-2)]/(-x²+x+2x-2)>0
(2x^2-8x-15)/(-x^2+3x-2)>0
(2x^2-8x-15)(x^2-3x+2)