Answer
(3 x+ 2$y^{2}$) (x + $y^{2}$)
Work Step by Step
3$x^{2}$ + 5 x $y^{2}$ + 2 $y^{4}$
= 3$x^{2}$ + 3 x $y^{2}$ + 2 x $y^{2}$ + 2 $y^{4}$
= 3 x(x + $y^{2}$) + 2 $y^{2}$ (x+ $y^{2}$)
= (3 x+ 2 $y^{2}$) (x+ $y^{2}$)
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