Use the power rule
d(x^n)/dx = n·x^(n-1)
to form the derivative.
f'(x) = 4·2x -4
f'(x) = 8x - 4
Now, substitute "a" for "x" to find f'(a):
f'(a) = 8a - 4
The answer is D .. one hundred random students from the sixth grade
Answer: I wanna say it's B
Step-by-step explanation: but I'm not completely sure.
