The expression is:

$-2b + 2b^2 + 2a$

This expression is already in its simplest form since there are no like terms that can be combined further. Here, you have three terms:

• $-2b$ (linear term in $b$)
• $2b^2$ (quadratic term in $b$)
• $2a$ (a constant or linear term in $a$)

If you were solving for specific values of $a$ and $b$, you could substitute them into the expression.

Would you like to evaluate it for particular values or simplify a related expression?

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Here are 5 follow-up questions:

1. Would you like to factor this expression?
2. Do you want to graph the expression as a function of $b$ or $a$?
3. Should we explore specific cases with given values for $a$ and $b$?
4. Are you interested in understanding how each term contributes to the graph of the expression?
5. Would you like to expand this expression further, if possible?

Tip: In expressions with multiple variables, focus on combining like terms and factoring where applicable.