# How do you factor x^2 + 8x + 16 - y^2 ?

May 16, 2018

$\left(x + 4 + y\right) \cdot \left(x + 4 - y\right)$
${x}^{2} + 8 x + 16 - {y}^{2}$
=${\left(x + 4\right)}^{2} - {y}^{2}$
=$\left(x + 4 + y\right) \cdot \left(x + 4 - y\right)$