-(x-y+2z)^2+(x-2y-3z)^2因式分解
问题描述:
-(x-y+2z)^2+(x-2y-3z)^2因式分解
答
答:利用平方差公式
-(x-y+2z)^2+(x-2y-3z)^2
=(x-2y-3z+x-y+2z)(x-2y-3z-x+y-2z)
=(2x-3y-z)(-y-5z)
=(3y+z-2x)(y+5z)