Question

if a = square root 2 +1 then find the value of a - 1 / a​

Answer 1

Answer:

4 . Therefore the value of (a-1/a)^2 = 4

Answer 2

Step-by-step explanation:

1/✓2+1=1/✓2+1 ×✓2-1/✓2-1

=✓2-1/1

=✓2-1

=✓2+1 - (✓2-1)

=2