First way. Factor as it is: -12x³ + 36x² Factor out -12x² -12x²(x - 3) That's one form of the correct answer. -------------------------------------- Second way. First write the terms in the reverse order: -12x³ + 36x² in reverse order is 36x² - 12x³ Now factor out 12x² 12x²(3 - x) That's another form of the correct answer. Either one is acceptable. Edwin