单项式2x^2y,-2xy^2,-3x^2y,xy的和是多少

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/27 15:59:15
单项式2x^2y,-2xy^2,-3x^2y,xy的和是多少单项式2x^2y,-2xy^2,-3x^2y,xy的和是多少单项式2x^2y,-2xy^2,-3x^2y,xy的和是多少2x^2y+(-2x

单项式2x^2y,-2xy^2,-3x^2y,xy的和是多少
单项式2x^2y,-2xy^2,-3x^2y,xy的和是多少

单项式2x^2y,-2xy^2,-3x^2y,xy的和是多少
2x^2y+(-2xy^2)+(-3x^2y)+xy
=2x^2y-2xy^2-3x^2y+xy
=-x^2y-2xy^2+xy