Answer:
x² + 2x - 15
Explanation:
Solve by using FOIL (First, Outside, Inside, Last). This distributes the numbers:
(x + 5)(x - 3)
Use FOIL:
x(x) + x(-3) + 5(x) + (5)(-3)
Simplify:
x(x) + x(-3) + 5(x) + (5)(-3)
x² + x(-3) + 5(x) + (5)(-3)
x² - 3x + 5(x) + (5)(-3)
x² - 3x + 5x + (5)(-3)
x² - 3x + 5x - 15
Combine like terms.
x² + 2x - 15
Your final answer would be x² + 2x - 15