上题就算了 x^2-(y-z)^2分之x^2-y^2除以（x-y）^2-z^2分之x^2+2xy+y^2乘以x^2-xy

来源：学生作业帮编辑：大师作文网作业帮分类：数学作业时间：2024/11/06 15:26:30

上题就算了 x^2-(y-z)^2分之x^2-y^2除以（x-y）^2-z^2分之x^2+2xy+y^2乘以x^2-xy分之x^2+xy-xz

原式=(x+y)(x-y)/(x+y-z)(x-y+z)÷(x+y)²/(x-y+z)(x-y-z)×x(x+y-z)/x(x-y)
=(x+y)(x-y)/(x+y-z)(x-y+z)×(x-y+z)(x-y-z)/(x+y)²×(x+y-z)/(x-y)
=(x-y)(x-y-z)/(x+y-z)(x+y)×(x+y-z)/(x-y)
=(x-y-z)/(x+y)

（xy-x²）除以xy分之x²-2xy+y²乘以x²分之x-y 化简(y-x)(z-x)/(x-2y+z)(x+y-2z)+（z-y)(x-y)/(xy-2z)(y+z-2x)+(x- (x-2y+z)(x+y-2z)分之（y-x)(z-x) + (x+y-2z)(y+z-2x)分之(z-y)(x-y) 计算[3x分之2-（x+y分之2）乘以[3x分之x+（y-x^2-xy）]除以x分之x-y （xy-x^2)乘以(xy)/(x-y) (2X+Z-Y)/(X^2-XY+XZ-YZ)-(Y-Z)/(X^2-XY-XZ+YZ) x+y分之xy=1,y+z分之yz=2,z+x分之zx=3 已知x+y分之xy=1,y+z分之yz=2,z+x分之zx=3,求x+y+z的值已知xy分之x+y=3,yz分之y+z=2,xz分之x+z=1,求x,y,z的值计算：x(y-x)除以xy分之x的平方-2xy+y的平方乘以x的平方分之x-y （x+y分之x + x+y分之2y）乘x+2y分之xy 除以（x分之1+y分之1）同样用两... （X+Y分之X+X+Y分之2Y)乘X+2Y分之XY除以（X分之1+Y分之1）要有过程