Question

If f(x) = 2х2 + 3 and g(x) = х2 -7, find (f- а)(x).

А. 3х2 – 4
В. 3х2 – 10
с. х2 – 4
D. х2 + 10

Answer 1

C. x^2 -4

Explanation:

What you do is subtract the functions as said by

(f-g)(x).

so:

f(x)-g(x)

(2x^2+3) - (x^2 -7)

2x^2 -x^2 +3 - 7= x^2 -4