Overview: 2 questions will be solved this time.Among them
           ☆2 inequalities

[ 1/2Inequality]
    Assignment:Find the solution set of inequality x(x+2) >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x * ( x + 2 ) >0         (1)

---

    From inequality(1)：
         x < -2 或  x ＞ 0

---

    The final solution set is :
         x < -2 或  x ＞ 0
[ 2/2Inequality]
    Assignment:Find the solution set of inequality x^2 <1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x ^ 2 <1         (1)

---

    From inequality(1)：
         -1 < x < 1

---

    The final solution set is :
         -1 < x < 1

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