1. Algebra 2 Notes March 23, 2009

2. 1. Do you remember the Quadratic Formula? - Work with the people around you. Brainstorm and try and remember the quadratic formula from your last math class. 2. Use the quadratic formula to solve these quadratic equations. Remember when you’re solving a quadratic equation it must be set = to 0 first!! (Need help? Look on page 289) :

3.  The Quadratic Formula (can be used to solve any quadratic equation):  Remember: you CANNOT take the square root of a negative number in the real number system ◦ Need to use imaginary numbers if you’re trying to find the square root of a negative

4.  Perfect Square Trinomial: ◦ Examples:  Completing the Square: finding the last term of a perfect square trinomial ◦ In order to complete the square the value of ‘a’ must be equal to 1

5.  The Discriminant of a Quadratic Equation:

6.  Page 285 #13-17  Page 293 #1, 10, 11, 16, 22, 31-33