SOLUTION: Hello, I need help with factoring the following polynomial: 4x^2+4xy+y^2-16 I have been searching for a little over an hour trying to find an equation similar to the one above

Question 778482: Hello, I need help with factoring the following polynomial:
4x^2+4xy+y^2-16
I have been searching for a little over an hour trying to find an equation similar to the one above but I haven't had any luck. Is this a factoring by squares problem or a factoring by grouping problem or none of them all together? Thank you SO much in advance!
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
4x^2+4xy+y^2-16
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(2x+y)^2 - 16
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= (2x+y-4)(2x+y+4)
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Cheers,
Stan H.
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