-x³+7x-6

来源：学生作业帮助网编辑：六六作业网时间：2024/11/15 10:16:45

-x³+7x-6-x³+7x-6-x³+7x-6-x^3-7x-60x^3-x-6x+6>0x(x^2-1)-6(x-1)>0x(x+1)(x-1)-6(x-1)>0(x

-x³+7x-6
-x³+7x-6

-x³+7x-6
-x^3-7x-60
x^3-x-6x+6>0
x(x^2-1)-6(x-1)>0
x(x+1)(x-1)-6(x-1)>0
(x-1)(x(x+1)-6)>0
(x-1)(x^2+x-6)>0
(x-1)(x-2)(x+3)>0
解得x∈(-3,1)∪(2,正无穷)