The polynomial x3 + 4x2 – 9x – 36 has 4 terms. Use factoring by grouping to find the correct factorization.

Group the terms: (x³ + 4x²) + (−9x − 36). Factor each group to get x²(x + 4) − 9(x + 4). The common factor is (x + 4), leaving (x² − 9)(x + 4), which is choice D.

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