Question

Are √2−√5 real numbers?

Answer 1

Yes they are real numbers but they are irrational (like fractions or repeating decimals)

Answer 2

√2 and √5 and their difference are all real numbers

Explanation:

In looks like you want to know if the difference ...

`√(2)-√(5)`

is a real number.

The square root of a non-negative number is a real number. The sum or difference of real numbers is a real number.

The sum you have indicated is a real number, approximately ...

√2 -√5 ≈ 1.4142 -2.2361 ≈ -0.8219