Answer:
x² - 2x - 15 = 0
Step-by-step explanation:
Given that the roots are x = - 3 and x = 5
Then the factors are (x + 3) and (x - 5)
The equation is then the product of the factors
(x + 3)(x - 5) = 0 ← expand left side using FOIL
x² - 5x + 3x - 15 = 0, that is
x² - 2x - 15 = 0
