Final answer:
To combine like terms in the given expression, we remove the brackets and combine the coefficients of similar variables. The final expression is 2x² + 9x + 2.
Step-by-step explanation:
To combine all like terms in the expression (7x² + 6x - 2) - (5x² - 8) + (3x − 4), we need to simplify each term and combine the coefficients of similar variables. Let's start by removing the brackets:
7x² + 6x - 2 - 5x² + 8 + 3x − 4
Now, let's combine the like terms:
(7x² - 5x²) + (6x + 3x) + (-2 + 8 - 4)
2x² + 9x + 2
Learn more about Combining like terms in an algebraic expression