Please help with these questions!!

x2 -6 x +9 5) (9 points) Given f(x) = x -3 if x 1 will be continous for all x Compute the derivative of the given function using the definition of the derivative 7) f(x) = 14x2 a) Find the diference quotient f(x + h) - f(x) h b) Find lim f ( x + h) - f(x) h-0 h c) f'(x) =