Question

Which of the following expressions are equivalent to x−(−x)+y

A. 0+y

B. y

C. None of the above

Answer 1

answer is none of the above
bcz ...

=x-(-x)+y

=x+x+y.....since '-' multiplied by '-' gives '+' ...

=2x+y//

Answer 2

C. None of the above.

Explanation:

x − (−x) + y

x + x + y

= 2x + y.