Simplify the expression: y + 2x2 + x

The terms are $y$, $2x^2$, and $x$.

Like terms are terms that have the same variables raised to the same powers.

• The term $y$ has the variable $y$ raised to the power of 1.
• The term $2x^2$ has the variable $x$ raised to the power of 2.
• The term $x$ has the variable $x$ raised to the power of 1. Since none of these terms have the same variables raised to the same powers, they are not like terms and cannot be combined.

The expression is already in its simplest form.