(xy+1)(x+1)(y+1)+xy
收藏:
0
点赞数:
0
评论数:
0
1个回答

(xy+1)(x+1)(y+1)+xy

=(xy+1)(xy+x+y+1)+xy

=(xy+1)[(xy+1)+x+y]+xy

=(xy+1)^2+x(xy+1)+y(xy+1)+xy

=(xy+1+x)(xy+1+y)

点赞数:
0
评论数:
0
关注公众号
一起学习,一起涨知识