Question

how to do the below rationalisation?

Answer 1

Answer:

For rationalization, you need to multiply and divide by either numerator or denominator with the sign changed in between.

We do so to make the identity ,

$x ^{2} - y ^{2} = (x + y)(x - y)$

Hope you get it.

Answer 2

Answer:

The target of rationalization is usually something that we have done, such as being unkind to another person. It may also be used when something happens independent of us which causes us discomfort, such as when a friend is unkind to us.