Can you plz help me solve them .

1) By direct use of the definition of a derivative, find the derivative of f(x) = 2x2-4 2) Find y' if y = x-5 - ~x + x -5/6. 3) Let f(x) = 2x2 - 3x + 2. (a) Find f(x). (b) Evaluate f (1). (c) Find an equation of the tangent line to the graph of y = f(x) at the point (1, 1). 4) (a) Find y' if y = (x4 - 10 x2 + 2)(x3 + 4x + 5). (b) If f ( x ) = x5 - 5x2 + 3 3x2 + 2 then f'(x) = (c) Find y' if y = 3 4 V4x3 - 3 5) (a) If f(x) = (2x7 + 7x5)3(5x2 + 2x )3, then find f'(x) (b) Differentiate: g(x) = (3x2 - 9)4 (4x - 6)7 (c) Ify = u3 - 4u2 + 2u - 1 and u = ~x + 6, find -when x = -2 dx