分式加减计算(5)/(x+1)-(2x-1)/(X+1)²

问题描述:

分式加减计算(5)/(x+1)-(2x-1)/(X+1)²

(5)/(x+1)-(2x-1)/(X+1)²
=(5(x+1)-(2x-1))/(X+1)²
=(5x+5-2x+1)/(X+1)²
=3(x+2)/(X+1)²