SAT math practice question: Algebraic fractions and polynomials

 
Try the following SAT math practice question (No Calculator) that tests your ability to deal with polynomials and algebraic fractions.
$$ \dfrac{2x^2+x}{x+2} $$
The expression above can be rewritten in the form $M + \dfrac{6}{x+2}$, where $M$ is a polynomial. Which of the following represents $M$?

1. $\quad 2x+3$
2. $\quad 2x-3$
3. $\quad 3x+2$
4. $\quad 3x-2$