Answer
$4x(x+4)(x+2)$
Work Step by Step
$2(12x^2)+2(2x^3+16x)$
$=24x^2+4x^3+32x$
$=4x^3+24x^2+32x$
$=4x(x^2+6x+8)$
$=4x(x^2+2x+4x+8)$
$=4x[x(x+2)+4(x+2)]$
$=4x(x+4)(x+2)$
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