作业帮x²-y²/x²-(y-z)²÷x²+2xy+y²/(x-y)²-z²×x²+xy-xz/x²-xy
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/28 15:43:51
x²-y²/x²-(y-z)²÷x²+2xy+y²/(x-y)²-z²×x²+xy-xz/x²-xy
x²-y²/x²-(y-z)²÷x²+2xy+y²/(x-y)²-z²×x²+xy-xz/x²-xy
x²-y²/x²-(y-z)²÷x²+2xy+y²/(x-y)²-z²×x²+xy-xz/x²-xy
原式=(X+Y)(X-Y)/(X+Y+Z)(X-Y+Z)*(X-Y+Z)(X-Y-Z)/(X+Y)^2*X(X+Y-Z)/X(X-Y)
=(X-Y-Z)/(X+Y)