因式分解 x2+y2+z2+2xy+2yz+2xz-2x-2z+1
问题描述:
因式分解 x2+y2+z2+2xy+2yz+2xz-2x-2z+1
x2+y2+z2+2xy+2yz+2xz-2x-2z+1
答
x2+y2+z2+2xy+2yz+2xz-2x-2y-2z+1
=(x+y+z)^2-2(x+y+z)+1
=(x+y+z-1)^2