Question

Prove that 2+root5 is an irrational number.

Answer 1

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 ☺️☺️

Answer 2

Please see the attachment below.

Enjoy using brainly