Find f ' (-3), if f (x) = (2x2 - 7x) (-x2 - 7). Round your answer to the nearest integer. Use the hyphen symbol, -, for negative values.

Given f (x) = (2x2 - 7x) (-x2 - 7) the value of f' (3) will be a s follows:

f (x) = - 2x^4+7x^3-14x^2+49x

thus from above:

f' (x) = - 8x^3+21x^2-28x+49

thus

f' (3) = - 8 (3) ^3+21 (-3) ^2-28 (-3) + 49

f' (3) = 106

Answer: f' (3) = 106