4x2y-{x2y-「3xy2 – 1/ 2(4x2y-8xy2)+x2y」}-5xy2
收藏:
0
点赞数:
0
评论数:
0
1个回答

答案:2x^2y+2xy^2

原式=4x2y-{x2y-[3xy2-2x2y+4xy2+x2y]}-5xy2

=4x2y-{x2y-[7xy2-x2y]}-5xy2

=4x2y-{x2y-7xy+x2y]}-5xy2

=4x2y-{2xy2-7xy}-5xy2

=4x2y-2xy2+xy-5xy2

=2x^2y+2xy^2

点赞数:
0
评论数:
0
关注公众号
一起学习,一起涨知识