化简4n^3-6n^2-2n+3
问题描述：
化简4n^3-6n^2-2n+3
答
4n^3-6n^2-2n+3
=(4n^3-6n^2)-(2n-3)
=2n^2(2n-3)-(2n-3)
=(2n-3)(2n^2-1)