计算:(3x-4y)(9x²+12xy+16y²)

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/01 19:04:07

计算:(3x-4y)(9x²+12xy+16y²)
计算:(3x-4y)(9x²+12xy+16y²)

计算:(3x-4y)(9x²+12xy+16y²)
=27x^3+36x^2y+16xy^2-36x^2y-48xy^2-64y^3
=27x^3-36xy^2-64y^3