Question

-√11 rational or irrational?
-56.4 rational or irrational?
-√16 rational or irrational?

Answer 1

-√11, irrational
-56.4 = -282/5, rational
-√16 = -4, rational

Answer 2

-√11 rational or irrational? Irrational

-56.4 rational or irrational? Rational

-√16 rational or irrational? Rational