Question

Which of the expressions is rational?

√25 +2


√64 +√45


√7-2​

Answer 1

√25 + 2

Explanation:

Only the first expression, √25 + 2, is rational. To be rational, an expression must be able to be written as the ratio of two integers. In this case, we can rewrite the expression as 5 + 2, which is equal to 7, which is a ratio of 7/1.