Final answer:
To simplify the expression 2x² + 3x + 5x² - 2x + x² + x, you need to combine like terms. The resulting simplified expression is 8x² + 2x.
Step-by-step explanation:
To simplify the expression 2x² + 3x + 5x² - 2x + x² + x, we need to combine like terms.
Like terms are terms that have the same variable and the same exponent.
In this expression, the terms that have the variable x squared are 2x², 5x², and x². So we add them together to get 8x².
The terms that have the variable x are 3x, -2x, and x. So we add them together to get 2x.
Finally, we add the constants, which is 0.
Therefore, the simplified expression is 8x² + 2x.