Question

|fx+ 1 x =8, find the value of x ^ 2 + 1/(x ^ 2) factorise it

Answer 1

Answer:

Given, x− x=8

Use : (x−

x

1

)

2

=x

2

+

x

2

1

−2

⇒(8)

2

=x

2

+

x

2

1

−2

⇒64+2=x

2

+

x

2

1

⇒x

2

+

x

2

1

=66