1.

Prove that 2 +root5 is irrational ncert ​

Answer»

Answer:

Step-by-step EXPLANATION:

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



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