x(x+2)-y(y+2)因式分解?
展开全部
x(x+2)-y(y+2)
=x²+2x-y²-2y
=(x²+2x+1)-(y²+2y+1)
=(x+1)²-(y+1)²
=(x-y)(x+y+2)
=x²+2x-y²-2y
=(x²+2x+1)-(y²+2y+1)
=(x+1)²-(y+1)²
=(x-y)(x+y+2)
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询