因式分解:3x^2y+6xy-4x-8
问题描述:
因式分解:3x^2y+6xy-4x-8
答
解
3x²y+6xy-4x-8
=(3x²y-4x)+(6xy-8)
=x(3xy-4)+2(3xy-4)
=(x+2)(3xy-4)