Final answer:
To simplify the expression (x²+2x²-7)+x³, combine like terms. Result: 3x² - 7 + x³
Step-by-step explanation:
To simplify the expression (x²+2x²-7)+x³, you need to combine like terms. Start by adding the coefficients of the like terms. In this case, x² + 2x² = 3x². So the expression becomes 3x² - 7 + x³. Since the terms have different powers of x, you cannot simplify it further.
Learn more about Simplifying expressions with like terms