Question

Calssify the following numbers as rational or irrantional:
(1) 3+ √5
(2) (5-√21) + (3+ √21)
(3) (4-√7) + (4+√7)
(4) 1/√2-1
(5) -√48/√27

Answer 1

rational :- 2, 4,
irrational :- 1,3,5.