Question

(x²-1) (x²+1) are the factors for

Answer 1

Answer:

Factorize x² + ( 1/x² ) + 1.

= x² + ( 1/x² ) + 1

= x² + ( 1/x² ) + 2 - 1

= { x² + ( 1/x² ) + 2 } - 1

= { x + ( 1/x )}² - 1²

= { x + ( 1/x ) + 1 } { x + ( 1/x ) - 1 }.