Question

If f(x) = 2x2 + 1 and g(x) = x2 - 7, find (f-g) (x).

Answer 1

x² + 8

Explanation:

note (f - g)(x)

= f(x) - g(x)

= 2x² + 1 - (x² - 7) = 2x² + 1 - x² + 7 = x² + 8