Question

Really Need Help. Will fan and give medal!!

Let f(x)=sqrt of x-2 and g(x) = sqrt of x+7. Find (f*g)(x). Assume all appropiate restrictions to the domain.

Answer 1

Answer Choices:

(f*g)(x) = x^2 + 5x - 14
(f*g)(x) = x^2 + 9x - 14
(f*g)(x) = sqrt of (x^2 + 5x - 14)
(f*g)(x) = sqt of (x^2 + 9x - 14)

Answer 2

B

Answer 3

Are you sure?

Answer 4

no

Answer 5

try using mathway

Answer 6

ok

Answer 7

The answer is C everybody

Answer 8

I finally proved it to myself by graphing the two functions. It is only true for the domain x>0