(2x+3y)(3x^2-2xy+y^2)

分类: 作业答案 • 2021-11-12 23:08:42

问题描述：

答

(2x+3y)(3x²-2xy+y²)=2x(3x²-2xy+y²)+3y(3x²-2xy+y²)=6x³-4x²y+2xy²+9x²y-6xy²+3y³=6x³+5x²y-4xy²+3y³