F(x) = (2x + 5)/(x^2)
F'(x) = (2x + 5)'/(x^2) + (2x + 5)*(1/x^2)' = 2/(x^2) - 2*(2x + 5)/(x^3) = (2x - 4x -10)/(x^3) =
= -2*(x + 5)/(x^3)
F(x) = (2x + 5)/(x^2)
F'(x) = (2x + 5)'/(x^2) + (2x + 5)*(1/x^2)' = 2/(x^2) - 2*(2x + 5)/(x^3) = (2x - 4x -10)/(x^3) =
= -2*(x + 5)/(x^3)