题目先化简,再求值:(2x+5x2−1−3x−1)÷2−xx2−2x+1(\frac{2x+5}{{x}^{2}-1}-\frac{3}{x-1})÷\frac{2-x}{{x}^{2}-2x+1}(x2−12x+5−x−13)÷x2−2x+12−x,从−2<x⩽2-2 \lt x\leqslant 2−2<x⩽2中选出合适的xxx的整数值代入求值.知识点：分式的化简求值章节：数与式 / 分式
