8(x²-2y²)-x(7x+y)+xy

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/30 00:24:22

8(x²-2y²)-x(7x+y)+xy

8(x²-2y²)-x(7x+y)+xy
=8x^2-16y^2-7x^2-xy+xy
=x^2-16y^2
=(x+4y)(x-4y)