Question

Prove that 2 + √5 is an irrational number​

Answer 1

Answer:

Hey.... I think this can be ur answer!!

Let us assume that 2+root5 is rational

SO,

2+root5 = a/b

Root5 = a/b-2 =a-2b/b

But we know that root5 is irrational

So,

Our assumption was wrong

Therefore, 2+root5 is irrational

Hence proved

Hope it helps you dear ☺️☺️

Step-by-step explanation:

Answer 2

Answer:

it is an irrational number

Step-by-step explanation:

2+root5= (5 is not a perfect square so root 5 is an irrational number)