carlosmarionavarropo carlosmarionavarropo 12-01-2024 Mathematics contestada 9 Which of the trinomials below cannot be factored? A IV only I. 4x² - 12x +9 II. 6x² - 43x+7 III. 10x²+x-6 IV. 9x² +71x + 56 B I, II, III and IV C I and II only D III only