下列不能用平方差A.-(x-y-z)(x+y+z)B.(x-y-z)(-x+y+z)C.(-x+y-z)(x+y+z)D
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下列不能用平方差A.-(x-y-z)(x+y+z)B.(x-y-z)(-x+y+z)C.(-x+y-z)(x+y+z)D.(x+y+z)(x-y-z)
![下列不能用平方差A.-(x-y-z)(x+y+z)B.(x-y-z)(-x+y+z)C.(-x+y-z)(x+y+z)D](/uploads/image/z/19141783-7-3.jpg?t=%E4%B8%8B%E5%88%97%E4%B8%8D%E8%83%BD%E7%94%A8%E5%B9%B3%E6%96%B9%E5%B7%AEA%EF%BC%8E%EF%BC%8D%EF%BC%88x-y-z%29%28x%2By%2Bz%29B.%28x-y-z%29%28-x%2By%2Bz%29C.%28-x%2By-z%29%28x%2By%2Bz%29D)
B
下列不能用平方差
A.-(x-y-z)(x+y+z)=-[x-(y+z)][x+(y+z)]
B.(x-y-z)(-x+y+z)
C.(-x+y-z)(x+y+z)=[y-(x+z)][y+(x+z)]
D.(x+y+z)(x-y-z)=[x+(y+z)][x-(y+z)]
下列不能用平方差
A.-(x-y-z)(x+y+z)=-[x-(y+z)][x+(y+z)]
B.(x-y-z)(-x+y+z)
C.(-x+y-z)(x+y+z)=[y-(x+z)][y+(x+z)]
D.(x+y+z)(x-y-z)=[x+(y+z)][x-(y+z)]
(x+y+z)(-x-y+z)平方差公式
(x+y-z)(x+y+z)用平方差公式
(x+y-z)(x-y+z)=
(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)(-x+y+z)(x-y+z)(x+y-z)怎么算
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)