Question

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)