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## Homework Statement

D

_{x}(7x+2-3x

^{5})

## Homework Equations

CNX

^{N-1}?

## The Attempt at a Solution

Basically, I am in Physics C and this is our first homework assignment dealing with calculus/derivatives. I was able to do some of them, but I have no idea how to do this one, mainly because I don't know what to do with the D

_{x}.

To make sure I am on the right track, please tell me if this is the correct answer for another problem:

Problem: f(x) = -5x

^{2}+2x-1, find df/dx

And my answer is -10x + 2, using the power rule. Is that right?