11 points and brainliest

Replace x with 5 in each equation then subtract:

f(x) = 2(5)^2 - 4(5) = 30

g(x) = 5-2(5) = -5

f(x) - g(x) = 30 - - 5 = 30 +5 = 35

The answer is C. 35

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square