Simplify the expression: a^2 - 2ab / 12

Solution:

The given expression is $$\frac{a^2 - 2ab}{12}$$.

We can factor out 'a' from the numerator:

Numerator = $$a(a - 2b)$$

So the expression becomes:

$$\frac{a(a - 2b)}{12}$$

This expression cannot be simplified further without additional information or context.

Answer: \(\frac{a(a - 2b)}{12}\)