Question

If = √2 − 1, then find the value of −



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Answer 1

Answer:

If = √2 − 1, then find the value of −What?

Step-by-step explanation:

Answer 2

Given: a = √2 + 1 1 a = 1 ( √ 2 + 1 ) 1 a = 1 ( 2 + 1 ) = 1 ( √ 2 + 1 ) = 1 ( 2 + 1 ) x ( √ 2 − 1 ) ( √ 2 − 1 ) ( 2 − 1 ) ( 2 − 1 ) = ( √ 2 − 1 ) ( ( √ 2 ) 2 − ( 1 ) 2 ) = ( 2 − 1 ) ( ( 2 ) 2 − ( 1 ) 2 ) = ( √ 2 − 1 ) 1 = ( 2 − 1 ) 1 = √ 2 − 1 = 2 − 1 Now, a − 1 a a − 1 a = (√2 + 1) – (√2 – 1) = √2 + 1 - √2 + 1 = 2Read more on Sarthaks.com - https://www.sarthaks.com/603483/if-a-2-1-then-find-the-value-of-a-1-a