化简x²-xy+2yz-4z²
问题描述:
化简x²-xy+2yz-4z²
答
=(x+2z)(x-2z)-y(x-2z)
=(x+2z-y)(x-2z)
化简x²-xy+2yz-4z²
=(x+2z)(x-2z)-y(x-2z)
=(x+2z-y)(x-2z)