The polynomial 24x3 − 54x2 44x − 99 is factored by grouping. 24x3 − 54x2 44x − 99 24x3 44x − 54x2 − 99 4x(____) − 9(____) What is the common factor that is missing from both sets of parentheses? 6x 11 6x − 11 6x2 11 6x2 − 11.