Question 248495
i need the derivative of 

{{{ (2*x^2-10)/(x^2+5)^2 }}}

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dy/dx[f/g] = [g*f' - fg']/g^2
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Your Problem:
dy/dx = [(x^2+5)^2*(4x) - (2x^2-10)(2(x^2+5)(2x)]/[(x^2+5)^4
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Cheers,
Stan H.