Evaluate each of the following. Show all your calculations.
f' ���(−2)� if ���f(x) = 2x^3�� + 4��x^2 − 5x� + 8
f(x) = 2x³+4x²-5x+8
f′(x) =6x²+8x-5
f′(-2) = 2(-4) ² +8(-2) -5 = 11
f' ���(−2)� if ���f(x) = 2x^3�� + 4��x^2 − 5x� + 8
f′(x) =6x²+8x-5
f′(-2) = 2(-4) ² +8(-2) -5 = 11