Question

If a=√2+1 , then find the value of a- 1/a​

Answer 1

Step-by-step explanation:

a- 1/a

√2+1-1/√2+1

√2+1 - 1√2+*√2-1/√2-1

√2+1 - √2-1/ √2+1(√2-1)

√2+1 - √2-1/ √2²-1²

√2+1-√2-1

0 ... is the answer

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