How to Solve a Quadratic Equation

1. Algebraically

1.1. Factoring

1.1.1. Factor out a GCF

1.1.2. Factor Completely

1.1.3. Factoring Trinomials When a=1

1.1.4. Factoring Trinomials When "a" is not 1 (Test & Try Method)

1.1.5. Factoring the Difference of 2 Perfect Squares

1.2. Completing the Square

1.2.1. Isolate your x terms by moving the constant "c" term to the right side of the equation,

1.2.1.1. Add the (b/2)^2 term to both sides of equation

1.2.1.1.1. Factor the perfect square trinomial

1.3. Quadratic Formula

2. Graphically

2.1. Using a Graphing Calculator

2.1.1. Use the Table

2.1.1.1. Find the roots by locating the x-value(s) when y=0

2.1.2. Use the graph to find the zeros

2.1.2.1. Steps on Calculator:

2.1.2.2. Type Equation Into Y=

2.1.2.2.1. Graph Equation, press 2nd, TRACE