SOLUTION: Given f(x)=x^2+8 and g(x)=square root of x-5, x>=5, find a. (g*f)(x) b. (g*f)(7)

Algebra ->  Functions -> SOLUTION: Given f(x)=x^2+8 and g(x)=square root of x-5, x>=5, find a. (g*f)(x) b. (g*f)(7)      Log On


   

Question 823734: Given f(x)=x^2+8 and g(x)=square root of x-5, x>=5, find
a. (g*f)(x)
b. (g*f)(7)
Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!
a. (g*f)(x)= sqrt of (x^2+3)
b. (g*f)(7)= sqrt of (52) = 2 sqrt(13)
You can ask me more at : mthman@gmail.com
Thanks