Factor polynomial $$ 4y^{2}+4xy+x^{2}-1 $$
Answer
$$ 4y^{2}+4xy+x^{2}-1 = (x+2y-1)(x+2y+1) $$
Explanation
$ 4y^2+4xy+x^2-1 $ can be written as
$$ 4y^2+4xy+x^2-1 = \left( x+2y-1 \right) \left( x+2y+1 \right)$$The explanation for this step cannot be generated.
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