Question

Multiply
(x^2 + 1/x^2) ( x^2- 1/x^2)​

Answer 1

Step-by-step explanation:

Given, x+ x/1 =2.

On squaring both side, we get,

(x+ x/1 ) ^2 =4.

We know, (a+b) 2 =a^ 2 +b ^2 +2ab.

x ^2+( x/1 ) ^2 +2(x)( x/1 )=4

⟹ x^2 + 1/x^2

=4−2=2.

Therefore, option A is correct.