Question

Let f(x)=x2 -4x and g(x) =7-x find (fg)(2)

Answer 1

Explanation:

f(x) = x² - 4

g(x) = 7 - x

= (fog)(2)

= x² - 4

= (7 - x)² - 4

= (7 - 2)² - 4

= 5² - 4

= 25 - 4

= 21

(fog)(2) = 21