因式分解4x平方+3y-3xy-4x
问题描述：
因式分解4x平方+3y-3xy-4x
答
4x²+3y-3xy-4x
=4x²-4x+3y-3xy
=4x(x-1)+3y(1-x)
=4x(x-1)-3y(x-1)
=(x-1)(4x-3y)