jaciwillyard711 jaciwillyard711 08-11-2022 Mathematics Answered Select the correct answer. What is the completely factored form of this polynomial? x³+3x² - 6x-18 O A. (x-2)(x − 3)(x+3) O B. (x²-6)(x+3) O C. (x²+3)(x-6) O D. (x+6)(x - 1)(x+3)