Hello, Amanda!
This one of the more unpleasant functions to differentiate.
I suggest using the Quotient Rule.
. . Those negative exponents can be dangerous.
It starts simply enough . . .
. . If there is a coefficient, I "pull it out front".
Now it gets very messy . . . simplify each derivative before continuing.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Factor: .
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
. . . . .
Factor: .
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
There were at least opportunities to make errors.
. . I don't guarentee any of my results.