x²(y+z)+y²(x+z)z²(x+y)-3xyz因式分解
x2 (x+y+z+xyz)因式分解
因式分解(Y+Z)(X+Z)+(X+Y)+XYZ
因式分解:(y+z)(x+z)(x+y)+xyz
因式分解:(x+y)(y+z)(z+x)+xyz
正整数x、y、z满足x&3-y&3-z&3=3xyz,x²=0(y+z),则xy+yz+xz=()
因式分解 (x+y+z)^2+yz(y+z)+xyz
x³+y³+z³-3xyz为什么等于(x+y+z)(x²+y²+z
因式分解:25x y^2 z^2 (x+y-z)-30xyz(z-x-y)^2+5x y z^3 (z-x-y)
已知XYZ满足/x-2-z/+(3x-6y-7)²+/3y+3z-4/=0.求XYZ的值
1、x³+x²y-x²z-xyz
①(x+y+z)(-x+y+z)(x-y+z)(x+y-z)
已知3/x+y=4/x+y=5/y+z,求xyz/(x+y)(y+z)(z+x)的值