Answer:
Explanation:
Let's call the two numbers we're looking for x and y. We know that their sum is 0, so x + y = 0. We also know that their difference is 8, so x - y = 8.
We can solve this system of equations by adding the two equations together. This gives us:
x + y = 0
x - y = 8
-------
2x = 8
Solving for x, we get x = 4. We can then substitute this value of x into either of the original equations to find y. Using x + y = 0, we get:
4 + y = 0
y = -4
Therefore, the two numbers we're looking for are **4** and **-4**. These two numbers have a sum of **0** and a difference of **8**.