x2-y2-z2-2yz因式分解,求

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x2-y2-z2-2yz因式分解,求x2-y2-z2-2yz因式分解,求x2-y2-z2-2yz因式分解,求x2-y2-z2-2yz=x^2-(y+z)^2=(x+y+z)(x-y-z)(x+y+z)

x2-y2-z2-2yz因式分解,求
x2-y2-z2-2yz因式分解,求

x2-y2-z2-2yz因式分解,求
x2-y2-z2-2yz
=x^2-(y+z)^2
=(x+y+z)(x-y-z)

(x+y+z)X(x-y-z)

x^2-y^2-z^2+2yz =x^2-(y-z)^2 =(x+y-z)(x-y+z) x2-y2-z2+2yz =x2-(y-z)2=(x+y-z)(x-y+z) =x^2-(y-z)

x2-y2-z2-2yz因式分解,求 x2-y2-z2+2yz 因式分解 x2+2xy-8y2+2xy+14yz-3z2二次三次项的因式分解因式分解：3x2-11xy+6y2-xz-4yz-2z2 因式分解x2-y2-z2-2yz+1-2x x2-6xy-10x+30 y+25 x2-2xy+y2-z2因式分解已知：x/2=y/3=z/4,求（x2+y2-z2-2xy）/（x2-y2+z2-2xz）除以（x2-y2-z2+2yz)/(x2+y2-z2+2xy) 已知：x/2=y/3=z/4,求（x2+y2-z2-2xy）/（x2-y2+z2-2xz）除以（x2-y2-z2+2yz)/(x2+y2-z2+2xy) x2+y2+z2-2xy+2yz+2zx=? 已知,x/2=y/3=z/4,求xy+yz+zx/x2+y2+z2????? x2+y2+z2+2xy+2yz+2zx 将这个式子因式分解顺便说几个类似的式子. 6x2-7xy-3y2-xz+7yz-2z2 这题用十字相乘法因式分解怎么做? x2-4y2+12yz-9z2 因式分解 x2+y2+z2+2xy+2yz+2xz-2x-2z+1x2+y2+z2+2xy+2yz+2xz-2x-2z+1 因式分解 a3b-ab3+a2+b2+1 3x2-11xy+6y2-xz-4yz-2z2 x2-8xy+15y2+2x-4y-3 实数x,y,z,若x2+y2=1,y2+z2=2,z2+x2=2,则xy+yz+zx的最小值是怎求 x2+4y2+9z2-4xy-6xz+12yz,因式分解因式分解x2+4y2+4xy-6xz-12yz+5z2