Question

Let `f (x) = x^2 – 16` and g(x) = x + 4, how do you find f/g and its domain?

Answer 1

see explanation.

Explanation:

`" factorise and simplify the rational expression"`

`(f(x))/(g(x))=((x-4)(cancel(x+4)))/((cancel(x+4)))=x-4`

`x-4" is linear and defined for all x"`

`rArr"domain is " x inRR`