Factoring: Special Cases Part II - Problem 4

Explanation

It is important that polynomials get factored completely, which means pulling out all greatest common factors. It's good to be in the habit of looking for a greatest common factor as your first step of any factoring problem, but if you forget, you should also check at the end that none of your binomial factors still have a greatest common factor. You should get the same result if you factor out the GCF at the end as you would have gotten if you had factored it out in the beginning.

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factoring completely greatest common factors