Question

show that 3+2√5 is an irrational number​

Answer 1

Answer:

Let be x

x = 3+2√5

x - 3 = 2√5

x - 3 / 2 = √5

LHS is rational

RHS is irrational

So,

LHS ≠ RHS

3+2√5 is irrational

Hence proved