Question

find dy/dx if y=7(x^2+5x)^-2

Answer 1

drop the -2 down and throw up a -3; then pop out the derivative of the inside for good measure

Answer 2

\[[f(u)^n]' = n[f(u)^{n-1}]\ u'\]

Answer 3

-2^-3 ?

Answer 4

those are parts of it yes :)

Answer 5

7(-2) (x^2+5x)^-3 (x^2+5x)'

-14 (x^2+5x)^-3 (2x+5)