Question

If f(x) = 3x2 + 1 and g(x) = 1 - x, what is the value of (f - g)(2)

Answer 1

14

Explanation:

(f - g)(x) = f(x) - g(x)

f(x) - g(x)

= 3x² + 1 - (1 - x)

= 3x² + 1 - 1 + x

= 3x² + x , thus

(f - g)(2)

= 3(2)² + 2 = 3(4) + 2 = 12 + 2 = 14