Question

Prove (giving
reasons) that
[(x + y)' + (x +4)!)' = X+Y​

Answer 1

Answer:

Since A+A = A and (A')' = A

So, [(x+y)' + (x+y)']' = [(x+y)']' = x + y

Answer 2

Answer:

I THINK ANSWER IN X + Y............. ..