Question

Pre calc exam help don’t understand due today

Answer 1

x³ + 4x² - 9x - 36 = 0

x²(x + 4) - 9(x + 4) = 0

(x² - 9)(x + 4) = 0

(x + 4)(x + 3)(x - 3) = 0

x = -4, -3, 3