What is the derivative of a fraction with a variable in the denominator?

[Drewnlauren06]

I'm having trouble finding the derivative of -2x^2+2x-7/x...I'm having trouble understand what to do with the X underneath. Do I bring X to the numerator and make it X^-1 or what? Thanks for your helphttps://www.youtube.com/watch?v=

 

[NoMoreExams]

Yes

$$\frac{1}{x^n} = x^{-n}$$

Now use the power rule, i.e.

$$f(x) = x^{blah} \Rightarrow f'(x) = ?$$