Question

prove that root 3 X 5 is irrational

Answer 1

√3×5
= 5√3
let 5 root 3 be rational
5√3 = p/q
we know that root 3 is irrational
So, 5 root 3 is not equal to p/q because p/q is rational
So, our assumption is wrong 5 root 3 is irrational

Answer 2

√3×5=5√3. let 5√3 be rational. 5√3=p/q. 5√3 is not equal to p/q because p/q is rational. 5√3 is irrational