if im trying to find the derivative of y=3x(x-4)(x+2) do i multipy the 3x through first or go right to the product rule ad if i do multiply it through do i multipy it through both terms(adsbygoogle = window.adsbygoogle || []).push({});

(3x^2-12x)(3x^2+6x) or

3(3x^2-12x)(x+2)

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# Product rule

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