Which shows one way to determine the factors of x cubed minus 12 x squared minus 2 x plus 24 by grouping?

Group the first two terms and the last two terms: (x³ − 12x²) + (−2x + 24). Factoring each group gives x²(x − 12) − 2(x − 12), which matches “x squared times (x minus 12) minus 2 times (x minus 12).”

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