(x-1)^3-(x-1)(x^2-2x+3)>=0
问题描述:
(x-1)^3-(x-1)(x^2-2x+3)>=0
答
(x-1)^3-(x-1)(x^2-2x+3)>=0
(x^3-3x^2+3x-1)-(x^3-3x^2+5x-3)>=0
x^3-3x^2+3x-1-x^3+3x^2-5x+3>=0
2x