因式分解x的平方-2xy-xz+yz+y的平方
问题描述:
因式分解x的平方-2xy-xz+yz+y的平方
答
-x(2y+z)+y(z+1)
答
x²-2xy-xz+yz+y²
=(x²-2xy+y²)-z(x-y)
=(x-y)²-z(x-y)
=(x-y)(x-y-z)
答
x²-2xy-xz+yz+y²
=(x-y)²-(x-y)z
=(x-y-z)(x-y)