Answer
(4x + 2y )(4x + $y^{2}$)
Work Step by Step
16$x^{2}$ + 4x$y^{2}$ + 8xy + 2$y^{3}$
4x( 4x+ $y^{2}$) + 2y(4x + $y^{2}$) group term
(4x + 2y )(4x + $y^{2}$)
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