Find two numbers a a and b b whose sum a + b a+b is 0 and whose difference a - b a-b is 2. your answer is

The two numbers are a and b.

Because their sum is 0, therefore

a + b = 0 (1)

Because their difference is 2, therefore

a - b = 2 (2)

Add (1) and (2).

a + b + (a - b) = 0 + 2

2a = 2

a = 1

From (1), obtain

1 + b = 0

b = - 1

Answer:

a = 1

b = - 1