1. The expression you provided is $5N^2 + 3N + 2$. This is a quadratic expression where $N$ is a variable, and $5$, $3$, and $2$ are constants called coefficients. 2. The term $5N^2$ means $5$ times $N$ squared (i.e., $N$ multiplied by itself). 3. The term $3N$ means $3$ times $N$. 4. The $+2$ is a constant term, meaning it does not depend on $N$. 5. Quadratic expressions like this commonly appear in algebra when you want to describe a parabola or perform calculations related to areas or physics problems involving acceleration. 6. In summary, the calculation comes from combining these terms into one polynomial expression: $5N^2 + 3N + 2$. If you want to do anything specific with this expression (like factor, solve for $N$, or evaluate for a number), please ask!