Question

Identify the number as rational or irrational. Explain.

-√127

Answer 1

Unless it is a perfect square, it is irrational. What are the squares near 127?
11*11 = 121 and 12*12= 144
so 127 is not a perfect square.

Answer 2

Irrrational because it cannot be written as the ratio of two integers a/b where b is not zero.

Answer 3

thank you both and thx for the explanation