1.(x-y)(x^2+xy+y^2) 2.(3x+2y)(2x+3y)
问题描述：
1.(x-y)(x^2+xy+y^2) 2.(3x+2y)(2x+3y)
答
1.(x-y)(x^2+xy+y^2)=x³+x²y+xy²-x²y-xy²-y³=x³-y³2.(3x+2y)(2x+3y)=6x²+9xy+4xy+6y²=6x²+13xy+6y²