Question

product x-1/x × x-1/x x x2 + 1/x2​

Answer 1

Answer:

We have x

2

+1/x

2

=23

(x+1/x)

2

=x

2

+1/x

2

+2

= 23 + 2

= 25

Taking square root on both sides, we get

(x+1/x)=±5

Thus, x + 1/x = 5 or -5