(8/9xy^2-4/3x^2y)(9/4x^2y^2)+3x^2y^2x^2y

分类: 作业答案 • 2022-05-25 17:04:30

问题描述：

(8/9xy^2-4/3x^2y)*(9/4x^2y^2)+3x^2y^2*x^2y

答

(8/9xy^2-4/3x^2y)*(9/4x^2y^2)+3x^2y^2*x^2y
=2x^3y^4-3x^4y^3+3x^4y^3
=2x^3y^4

(8/9xy^2-4/3x^2y)*(9/4x^2y^2)+3x^2y^2*x^2y