SOLUTION: Let f(x) =2x^2+3 and g(x) = 4x-8. Find each composition. (fog)(x) f(g(x)) = f(4x-8) Then I do not know what to do. I am asking for help with the above

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: Let f(x) =2x^2+3 and g(x) = 4x-8. Find each composition. (fog)(x) f(g(x)) = f(4x-8) Then I do not know what to do. I am asking for help with the above      Log On


   



Question 302434: Let f(x) =2x^2+3 and g(x) = 4x-8. Find each composition.
(fog)(x)
f(g(x)) = f(4x-8)

Then I do not know what to do. I am asking for help with the above

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Let f(x) =2x^2+3 and g(x) = 4x-8. Find each composition.
(fog)(x)
f(g(x)) = f(4x-8)
---------------
Sub 4x-8 for x in f(x)
= 2%284x-8%29%5E2+%2B+3
= 32x%5E2+-+128x+%2B+131