What are the domain restrictions of the expression h^2+3h−10/h^2−12h+20 ? select each correct answer. h≠10 h≠5 h≠2 h≠−5 h≠−10 h≠−2

The denominator cannot be 0, so if h^2-12h+20=0
(h-2)(h-10)=0
h=2 or h=10
So h cannot be 2 or 10, the first and third choices are correct.