algebra: how solve this pls help

Question

when y=3x²-(3/x³) find (dy)/(dx)

Answer 1

Misclassified: it's Calculus!

y = 3x² - 3x^-3

y' (a.k.a. dy/dx) = 6x + 9x^-4

 

(Using algebra, the derivative above can be written in other ways)