Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -3*x^4+10*x^3+20*x^2-40*x <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -3 * x ^ 4 + 10 * x ^ 3 + 20 * x ^ 2 - 40 * x <0         (1)

---

    From inequality(1)：
         x < -2.252875 或  0 < x < 1.420855 或  x ＞ 4.165353

---

    The final solution set is :
         x < -2.252875 或  0 < x < 1.420855 或  x ＞ 4.165353

Your problem has not been solved here? Please take a look at the  hot problems ！