## ← Factoring Check 1 - Visualizing Algebra

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Showing Revision 3 created 05/25/2016 by Udacity Robot.

1. We start the number puzzle by multiplying 1 and 12. This gives us our top
2. number. The x term has a coefficient of 7. So that goes inside the bottom. We
3. need a factor pair of 12 that sums to 7. So that must be positive 3 and positive
4. 4. We rewrite this middle term using the factors that we found. So x squared
5. plus 7x plus 12 is equal to x squared plus 3x plus 4x plus 12. We can use
6. factoring by grouping and remove an x from the first pair of terms and a 4 from
7. the last pair of terms. This leaves us with x plus 4 times x plus 3