Question

1.) let f(x) =-2x-5 and g(x)=x^2 a.) (f o g)(2)

Answer 1

Answer:

(fog)(2) = –13

Solution:

Given : f(x) = - 2x - 5 , g(x) = x²

To find : (fog)(2)

We have ,

f(x) = - 2x - 5

g(x) = x²

Now,

(fog)(x) = f [g(x)]

= f(x²)

= - 2x² - 5

Thus,

(fog)(2) = - 2×2² - 5

= - 8 - 5

= - 13

Hence,

The required value of (fog)(2) is (-13).