Question

Prove that √5-1 is irrational

Answer 1

Let √5-1 be n

Therefore

√5-1=n

√5=n+1


We know that √5 is an irrational number
Therefor n+1 is also an irrational number

Therefore

√5-1 is an irrational number



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Answer 2

Answer:

Here is the answer

Step-by-step explanation: