分解因式,2x立方-3x平方-6x-1

2026-05-18 22:43:08
推荐回答(1个)
回答1:

2x^3-3x^2-6x-1 = 2x^3-3x^2-6x-3+2 = 2(x^3+1)-3(x^2+2x+1)
=2(x+1)(x^2-x+1)-3(x+1)^2
=(x+1)(2x^2-5x-1)