Answer:
(-∞, ∞)
Step-by-step explanation:
Given,
[tex]f(x)=x^2-1 \ and\ g(x)=2x-3[/tex]
Then (fºg)(x) would be ,
[tex](2x-3)^2-1\\4x^2-12x+9-1\\4x^2-12x+8[/tex]
Since this is a polynomial, we know domain of a polynomial is all real number.
Therefore the domain of this (fºg)(x) is (-∞, ∞).
