解不等式(x2-5x-17)/(-x2+2x-2)>1
问题描述:
解不等式(x2-5x-17)/(-x2+2x-2)>1
答
(x²-5x-17)/(-x²+2x-2)-1>0
(x²-5x-17+x²-2x+2)/(-x²+2x-2)>0
两边乘-1
(2x²-7x-15)/(x²-2x+2)