Posted by just wondering on Tuesday, February 9, 2010 at 7:42pm.
3f(x4)=x^2
i have no clue what to do with the 3 in front of the f. please explain step by step as to how to do this question
the answer in the back is
3x^2+24x48

mathfunctions starting  Reiny, Tuesday, February 9, 2010 at 8:04pm
The problem probably said:
if f(x) = x^2 , find 3f(x4)
f(x) = x^2
f(x4) = (x4)^2 = x^2  8x + 16
then 3f(x4) = 3(x^2  8x + 16)
= 3x^2 + 24x  48