Question

For f(x) =4x+1 and g(x) = x^2 - 5 find (f•g)(x)

A.4x^3+x^2 -20x-5
B.4x^2-19
C.4x^3 + x^2-4x-6
D.4x^3+x^2-5x-5​

Answer 1

The value of function (fog)(x) is 4 x² - 19

Explanation:

Given function as :

f(x) = 4 x + 1

g(x) = x² - 5

So , function (fg(x)) can be written as

(fog)(x) = 4 ( x² - 5 ) + 1

Or, (fog)(x) = 4 x² - 20 + 1

Or, (fog)(x) = 4 x² - 19

Hence The value of function (fog)(x) is 4 x² - 19 Answer