Did I solve this function correctly?

[CaptainBlood]

Let f(x - 2) = x^2 + 2

 

Find f(3)

 

Do I just sub 3 for x and get f(1) = 11?

 

or do I do it this way:

 

x - 2 = 3

 

x = 5 , therefore f(5) = (5)^2 + 2 = 27?

 

or just let x = 5, then f(5 - 2) = f(3) = 5^2 + 2 = 27?

Edited May 18, 2011 by CaptainBlood

[Hal.]

CaptainBlood , Let f(x - 2) = x^2 + 2

 

Find f(3) ,

 

 

 

This is exactly what I would write on paper , f ( x - 2 ) = f ( 3 ) , x - 2 = 3 , x = 5 , f (3 ) = ( 5 ^ 2 ) + 2 , f ( 3 ) = 27