Solving Quadratics by Factoring

Finding the Solution and x-intercepts

Solving by Factoring Uses the Rainbow Method

Rainbow Steps:
1. Multiply First and Last Number
2. Find the Factors of the Rainbow
3. Determine which factors add to the middle term
4. Rewrite with factors
5. Group
6. Find GCF of each parenthesis
7. Write as product of 2 factors

Now Solve!

Set Each Factor equal to zero
Undo addition or subtraction
Undo multiplication or division

Graph the equation on your graphing calculator

Your graph should cross the x-axis at your answers from factoring!
In this problem the graph should cross the x-axis at -1 and -8
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