Day: November 13, 2018

Discriminant is used when figuring out how many solutions and if they are real roots. The Discriminant is  – 4ac$, which looks familiar beucase it is the discriminant of the equation in the quadratic formula. Just by the simple equation  – 4ac$ it can tell us alot about the quadratic equation before we even start solving.

If you get zero means x is one solution one solution, if the x is greater than zero you have two solutionsand you know it will be rational, if you get less than zero there is no solution.

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.)