Question

If `f(x) = 2 - x^(1/2)` and `g(x)=x^2-9`, what is the domain of `g(x)-:f(x)'

Answer 1

(-oo,2]` and `[2,oo)`

`(-oo,4]` and `[4,oo)`

`(-oo,2]` and `[4,oo)`

`(-oo,-2]` and `[2,oo)`