Answer:
x² + 2x - 6
Step-by-step explanation:
The notation (f+g)(x) means to add each equation.
(f+g)(x) = 2x + 1 + x² - 7 = x² + 2x - 6
Simplify the expression by combining like terms like 1 - 7 = -6. 2x and x² are not like terms since they have different exponents on the base.
