(x+y)^2-6(x+y)z+9z^2分解因式

化简(y-x)(z-x)/(x-2y+z)(x+y-2z)+（z-y)(x-y)/(x-2z+y)(y+z-2x)+(x-z)(y-z)/(y+z-2x)(x-2y+z) 计算:(y-x)(z-x)/(x-2y+z)(x+y-2z)+(z-y)(x-y)/(x+y-2z)(y+z-2x)+(x-z)(y-z)/(y+z-2x)(x-2y+z) 2(x+y-z)-3(x-y+z)-5(x+y-z)+6(x-y+z) 计算 计算:x^2/(x-y)(x-z)+y^2/(y-x)(y-z)+z^2/(z-x)(z-y) 化简(y-x)(z-x)/(x-2y+z)(x+y-2z)+（z-y)(x-y)/(xy-2z)(y+z-2x)+(x-z)(y-z)/(y+z-2x)(x-2y+z)速速回答 化简(x+Y)^2(y+z-x)(z+x-y)+(x-y)^2(x+y+z)(x+y-z) 计算题(x+y)^2(y+z-x)(z+x-y)+(x-y)^2(x+y+z)(x+y-z). 1、y-x/x²-y²2、(x-y)(y-z)(z-x)/(z-y)(y-x)(x-z) 三元一次方程x+y+z=0 4x+2y+z=3 9x+3y+z=6x+y+z=04x+2y+z=3 9x+3y+z=6 求化简(x+3y+2z)(x-3y+6z)(x+3y+4z-2z)(x-3y+4z+2z) x=2y-9z x+2y-3z=2 x-2y+6z=1 x+y+z+2,4x+2y+z+2,9x+3y+z=6解方程组 {x+y+z=0 {4x+2y+z=3 {9x+2y+z=6 初二数学x+2y+4z=6,2x+y-z=9,求x+y+z=? 方程组3x-y-z=9,2x+y-2z=6,x+y+z=15 方程组3x+y+2z=10,2x+3y-z=9,x+y+z=6 已知实数x,y,z,满足那么x+y=6,z^2=xy-9,求(x+y)^z {x+y+z=0 4x+2y+z=3 9x+3y+z=6