2:8

It seems like you might be referencing a ratio or a mathematical expression. The ratio 2:8 can be simplified.

To simplify:

1. Divide both numbers by their greatest common divisor (GCD).
2. The GCD of 2 and 8 is 2.
3. Dividing both sides by 2 gives you 1:4.

So, 2:8 simplifies to 1:4.

If you meant something else, please provide more context!