(x^2-9x+11)/(x^2-2x+1)〉7则么解?

问题描述:

(x^2-9x+11)/(x^2-2x+1)〉7则么解?

(x&sup2-9x+11)/(x&sup2-2x+1)>7则么解?
由于分母x&sup2-2x+1=(x-1)&sup2>0,所以原不等式两边同时乘以(x&sup2-2x+1),得:
x&sup2-9x+11>7(x&sup2-2x+1)
整理为:
6x&sup2-5x-4