# Greatest Common Factors - Problem 5

###### Explanation

Factoring is the process of taking a polynomial that is a string of sums and differences and re-writing the expression as a product. This is a complicated process, but the first step is always looking for and "undistributing" a greatest common factor if one exists. In these problems, we are looking for what number, or constant, multiplies into all terms of the polynomial. Lastly, sometimes it is useful to pull out a negative factor, even though it would technically not be the greatest factor.

###### Transcript

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