2*a-3*a*b+3*b2

To simplify the expression \(2a - 3ab + 3b^2\), follow these steps:

1. Identify the terms:

   • \(2a\) is a term involving \(a\).
   • \(-3ab\) involves both \(a\) and \(b\).
   • \(3b^2\) is a term involving \(b\) squared.

2. Since there are no like terms (terms that can be combined), the expression is already in its simplest form.

Thus, the simplified expression is:

\[ 2a - 3ab + 3b^2 \]

If you need to factor it or do something else with it, please let me know!