SOLUTION: Can someone please help me? I have been working on this for a while and yet to come up with an answer. Let f(x)=x+4 and g(x)=x^-x. Find and simplify the expression. (f+g)(2)

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Can someone please help me? I have been working on this for a while and yet to come up with an answer. Let f(x)=x+4 and g(x)=x^-x. Find and simplify the expression. (f+g)(2)      Log On


   

Question 419091: Can someone please help me? I have been working on this for a while and yet to come up with an answer.
Let f(x)=x+4 and g(x)=x^-x.
Find and simplify the expression. (f+g)(2)
(f+g)(2)=__________(Simplify your answer.)
Let f(x)=x^-16 and g(x)=4-x.
Answer by dnanos(83) About Me  (Show Source):
You can put this solution on YOUR website!
(f+g)(x)=f(x)+g(x)=
x%2B4%2Bx%5E%28-x%29=
%28x%2B4%29%2F1%2B1%2F%28x%5Ex%29=
%28%28x%5Ex%29%28x%2B4%29%29%2Fx%5Ex%2B1%2F%28x%5Ex%29=
%28%28x%5E%28x%2B1%29%2B4%28x%5Ex%29%29%2Fx%5Ex%2B1%2F%28x%5Ex%29%29=
%28%28x%5E%28x%2B1%29%2B4%28x%5Ex%29%2B1%29%2F%28x%5Ex%29%29
(f+g)(2)=%28%282%5E%282%2B1%29%2B4%282%5E2%29%2B1%29%29%2F%282%5E2%29=
%288%2B16%2B1%29%2F2=
25%2F2
(ii)
(f+g)(x)=%28x%5E-16%2B4-x%29=