Multiply the equation (t-7)^3
(t - 7)³(t - 7)(t - 7)(t - 7)(t² - 7t - 7t + 49)(t - 7)(t² - 14t + 49)(t - 7)(t³ - 7t² - 14t² + 98t + 49t - 343)t³ - 21t² + 147t - 343