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
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
Undo addition or subtraction
Undo multiplication or division
Graph the equation Using Desmos
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
In this problem the graph should cross the x-axis at -1 and -8
All images created by J. Crosby using word and Desmos Test Version via NCVPS Canvas Course
Practice Image and Graphing Calculator via Pixabay.com / CC0