Question

16. If f(x) = 2x - 1 and g(x) = x2 - 2, find [g • fj(x).

Answer 1

x^2 - 2x - 1.

Explanation:

(g - f)(x)

= g(x) - f(x)

= x^2 - 2 - (2x - 1) (Note we put the 2x -1 in parentheses).

= x^2 - 2 - 2x + 1

= x^2 - 2x - 1.