How do you factor $4x^2 + 4xy +y^2$ ?

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Answer 1 · 2015-06-13T15:13:27

$4x^2+4xy+y^2 = (2x+y)^2$

This is a perfect square trinomial and especially easy to spot if you know your square numbers: $441 = 21^2$

How do you factor 4x^2 + 4xy +y^24x^2 + 4xy +y^2?