Answer:
Explanation:
Alright, lets get started.
If the rational expression is converted into 
 , then it must be equal to
, then it must be equal to 

So, checking for first option :


Foiling

 which is equivalent to given expression.
 which is equivalent to given expression. 
It means option 1 is correct answer : 
 : Answer
 : Answer
Hope it will help :)