Question

What's the domain of g(x)=(x^2-5x+4)/(x^2-2x-15)?

Answer 1

For the domain, the denominator should not be zero

$x {}^{2} - 2x - 15 < > 0( \: not \: equal) \\ (x - 5)(x + 3) < > 0$

x=! 5,-3

domain=R - {5,-3}