(X^3-2y^3-3X^3y)-(3X^3-3y^3-7X^2y)怎么化简

分类: 作业答案 • 2021-12-19 11:57:28

问题描述：

答

(X^3-2y^3-3X^3y)-(3X^3-3y^3-7X^2y)
=x³-2y³-3x³y-3x³+3y³+7x²y
=-2x³+y³-3x³y+7x²y
祝学习进步，望采纳~~

答

(X^3-2y^3-3X^3y)-(3X^3-3y^3-7X^2y)
=X^3-2y^3-3X^3y-3X^3+3y^3+7X^2y
=-2X^3+y^2+4X^3y+7X^2y