Question

please tell me the answer of this question but tell me that where the -2 has disappeared with step by step solution I will only mark you brain list when you will give the answers step by step ​

Answer 1

Answer:

Step-by-step explanation:

X^2+1/X^2-2

This makes the identity of (a-b) ^2........

Where a=x

And b=1/x

And -2ab = -2*x*1/x. (x*1/x cancel out therefore only -2 is left)

Since (a-b) ^2= a^2 + b^2 -2ab

Therefore only -2 is left