Section 8.2 The Quadratic Formula The Quadratic Formula Solving Equations Using the QF Solving an Equivalent Equation Solving Functions and Rational Equations Problem Solving 8.21
Introducing … The Quadratic Formula! The Quadratic Formula is used to find solutions to any quadratic equation The formula was derived using completing the square and the square root property. 8.22
On your next test, Derive the Quadratic Formula ! Move c to the right side Divide all terms by a Using b/a, complete the square Make common denominators Rewrite in squares format Take square root of both sides Remove radicals where possible Move b/2a to the other side Combine fractions 8.23
Practice with the QF – Solve: 8.24
Solving functions 8.25
Imaginary Solutions 8.26
Solving Equivalent Equations Sometimes we need to simplify first 8.27
What Next? Discriminants! Present Section 8.3Section 8.3 Studying QE Solutions 8.28