Question

which of the following is an irrational number?
(a) 5+√5
(b) (2+√5)√5
(c) (2+√5)(2-√5)
(d)5√5​

Answer 1

Answer:

a)5+25=30

b)2+25*25=27*25=675

c)2+25*2-25=27*-23=-621

Answer 2

Answer:

option a is an irrational number