calculus

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I am learning derivatives and I despise having to use the definition of the derivative. Please check my answer for this particular one! it is different from the one I get by differentiating.

The question: f(x) = 2+x / x^3
my answer: -6x^2-2x^2

  • calculus -

    Learn to use parentheses where needed. Is the numerator x or 2+x ?

  • calculus -

    sorry!
    the numerator is 2+x and the denominator is x^3

  • calculus -

    :( please help?

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