Answer
$y' =-25x^{-6}+12x^{-3}-13x^{-2}$
Work Step by Step
In order to derivate this function you have to apply the power rule:
$\dfrac{d}{dx}(x^n)=nx^{n-1}$
$y' =5(-5)x^{-6}-6(-2)x^{-3}+13(-1)x^{-2}$
$y' =-25x^{-6}+12x^{-3}-13x^{-2}$
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