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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (a+13)*(a+13)-28(a*a-a-2) <1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( a + 13 ) * ( a + 13 ) - 28 * ( a * a - a - 2 ) <1         (1)

---

    From inequality(1)：
         a < -2.048983 或  a ＞ 4.048983

---

    The final solution set is :
         a < -2.048983 或  a ＞ 4.048983

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