x³-x²+2/x-1 -x²+2 化简计算
问题描述:
x³-x²+2/x-1 -x²+2 化简计算
答
[(x³-x²+2)/(x-1)] -x²+2
=[x²(x-1)+2]/(x-1) -x²+2
=x²+2/(x-1)-x²+2
=2/(x-1)+2
=2x/(x-1)