Final answer:
The resulting polynomial when multiplying f(x) = -5x - 8 and g(x) = 10x² - 3x - 9 is -50x³ - 43x² + 72x + 72.
Step-by-step explanation:
To determine the resulting polynomial when multiplying two polynomials, we need to use the distributive property. Let's multiply the two polynomials:
f(x) = -5x - 8
g(x) = 10x² - 3x - 9
First, we multiply -5x with each term in g(x) and then multiply -8 with each term.
The resulting polynomial is: f(x) · g(x) = -50x³ - 43x² + 72x + 72.