I think its a :) if not c
Answer:
2x
Step-by-step explanation:
Given

=
× 
= 2 × 
= 2x
No.
If a rational number can be an integer, x and y could be 5.5 and .5, or something that adds up to (number).0. This means, if the two non-rational numbers add up, they could be irrational, but the result isn't.
Answer:
the answer is c I did it before but I can't explain step by step I hope it helps u