Give the domain of the function.

Help..

1. g(x)= (5)/(x^2-25)

2. f(t)= 3t^2+5t+2

3. h(x)=√5x-2

1. x ∈ R , x ≠ ± 5

2. x∈ R

3. I can't tell if you mean
h(x) = √5x - 2 , the way you typed it, or
= √(5x) - 2 or
= √(5x-2)

totally different answers for each one