x^2-3xy-10y^2-3x+y+2 因式分解

分类: 作业答案 • 2021-12-20 00:23:36

问题描述：

答

x^2-3xy-18y^2-3x-9y =(x-6y)(x+3y)-3(x+3y) =(x-6y-3)(x+3y) (x+3y)(x-6y)-3(x+3y) =(x+3y)(x-6y-3)

答

x^2-3xy-10y^2-3x+y+2
=(x-5y)(x+2y)-3x+y+2
=(x-5y-2)(x+2y-1)