Question

(5 _ root 5) (5 + root 5) it is rational or not

Answer 1

Answer:

of course this will be rational beacuse we can write as

5^2-(root5)^2

=25-5

=20

which is rational number

Answer 2

Answer:

Step-by-step explanation:

(5-√5) (5+√5)

Hence ..we can apply identity of

(a-b) (a+b) = a²-b²

(5)²-(√5)² =25-5

= 20

Hence it is a rational..

Hope it's helpful for you dear