Question

If f(x) = 2x2 + 5 and g(x) = x2 – 2, find (f – g)(x).

A. x2 + 7
B. 3x2 + 3
C. 3x2 + 7
D. x2 + 3

Answer 1

2x^2 + 5 - (x^2 - 2 ) =
2x^2 + 5 - x^2 + 2 =
x^2 + 7 <===