SOLUTION: factor 16-4x^2

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Question 191785: factor
16-4x^2
Answer by orca(409) About Me  (Show Source):
You can put this solution on YOUR website!
First note that 4 is the common factor of the two terms. So we need to factor it out.
16-4x%5E2
=4%284-x%5E2%29
=4%282%5E2-x%5E2%29
=4%282%2Bx%29%282-x%29 use the formula a%5E2-b%5E2=%28a%2Bb%29%28a-b%29