which shows one way to determine the factors of x^3 – 12x^2 – 2x 24 by grouping?a. x(x^2 – 12) 2(x2 – 12)b. x(x^2 – 12) – 2(x2 – 12)c. x^2(x – 12) 2(x – 12)d. x^2(x – 12) – 2(x – 12)