expressions

Question

If f (x) = square root x^2 -1 and g(x)= sqrt x-1, which expression represents for f(x)/g(x)for x>1?

 

 

A. sqrt x

B. 1/sqrt+1

 

C. sqrt x+1

 

D. sqrt x-1

 

I can't figure out which answer is correct.

Answer 1

C is correct. sqr(x+1)

(x^2-1)/(x-1) = (x+1)(x-1)/(x-1) = x+1