5x^2-4y+xy-20x
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/27 06:54:19
5x^2-4y+xy-20x5x^2-4y+xy-20x5x^2-4y+xy-20x5x^2-4y+xy-20x=5x^2-20x-4y+xy=5x(x-4)-y(4-x)=5x(x-4)+y(x-4
5x^2-4y+xy-20x
5x^2-4y+xy-20x
5x^2-4y+xy-20x
5x^2-4y+xy-20x
=5x^2-20x-4y+xy
=5x(x-4)-y(4-x)
=5x(x-4)+y(x-4)
=(x-4)(5x+y)