Question

Math classify the following number as rational or irritional question hai2-√5

Answer 1

Answer:

) 2 - √5

The sum or difference between a rational number and an irrational number is always irrational.

Here 2 is a rational number and √5 is an irrational number. Hence 2 - √5 is an irrational number.

ii) (3 + √23) - √23

By simplifying the given expression we get 3.

3 = 3/1, which is in the form of p/q and hence a rational number.

Thus, (3 + √23) - √23 is a rational number.