x^2 / ( x + 2) = x^2 (x + 2)^(-1) = f(x)
Take the derivative and set to 0
f'(x) = 2x (x + 2)^(-1) - x^2 (x + 2)^(-2) = 0
(x + 2)^(-2) [ 2x ( x + 2) - x^2] = 0
x^2 + 4x = 0
x ( x + 4) = 0
Local Max occurs at x = -4
Local Min occurs at x = 0
No min for x > 2
