In Solving Quadratic Inequalities, you need to know three steps.
Step 1: Factor the exspression
Step 2: Determine the zeros
Step 3: Use a sign chart for each factor to the left and right of zeros
Note: Test numbers a number on all the opposing sides of the x intercepts
(Key things to know when solving Quadratic Inequalities is to make sure the the statement is always true, if its not you know your answer is wrong or there is no possibility.)