Question

show that (√3+√5)(√3+√5) is an irrational number

Answer 1

(√3+√5)(√3+√5)
√3*√3+√3*√5+√5*√3+√5*√5
3+√15+√15+5
8+2√15

we know that the sum of a rational and a irrational is irrational number. so,it is irrational number..