Answer
$[ 2x * f(x) ] + [ (x^2) * f'(x) ]$
Work Step by Step
$( ( x^2) f(x) ) '$
$[( x ^ 2 )' * f(x) ] + [ ( x^2) * ( f(x) )' ]$
$[ (2x) * f(x) ] + [ (x^2) * f'(x) ]$
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