Question

If a=√2+1 find the value of (a-1/a) ^2

Answer 1

the answer is...

2/2+1+2(root 2)

2/3+2(root 2)

Answer 2

Answer:

a=√2+1

(a-1/a)^2

or,(√2+1-1/√2+1)^2

or,(√2/√2+1)^2

or,2/(√2+1)^2

or,2/2+2√2+1

or,2/3+2√2