Answer:
3x
Step-by-step explanation:
To simplify the expression (5x - 3x² + 6) - (2x - 3x² + 6), we can distribute the negative sign within the second set of parentheses. This will change the signs of all terms inside the parentheses:
= 5x - 3x² + 6 - 2x + 3x² - 6
Next, we can combine like terms:
= (5x - 2x) + (-3x² + 3x²) + (6 - 6)
= 3x + 0 + 0
= 3x
Therefore, the simplified form of the expression is 3x.
