(X+Y+Z)(X+Y+Z)怎么去括号
(x+y+z)(-x+y+z)(x-y+z)(x+y-z)怎么算
(x+y)+z,x+(y+z)英语怎么读
(x+y-z)(x-y+z)=
(x*x+y*y+z*z)-(X+Y+Z)=?excel公式怎么表达
(y-x)/(x+z-2y)(x+y-2z)+(z-y)(x-y)/(x+y-2z)(y+z-2x)+(x-z)(y-z
①(x+y+z)(-x+y+z)(x-y+z)(x+y-z)
数学 多项式(x+y-z)(x-y+z)-(y+z-x)(z-x-y)公因式
方向 X Y Z
(x+y+z)^5-(x+y-z)^5-(x+z-y)^5-(z+y-x)^5,
X+Y+Z=?
如何化简(x+y+z)(x+y-z)(x-y+z)(-x+y+z)
x,y,z正整数 x>y>z证明 x^2x +y^2y+z^2z>x^(y+z)*y^(x+z)*z^(x+y)