Ricardo is factoring the polynomial, which has four terms.5x3 + 20x2 + 2x + 85x2(x + 4) + 2(x + 4) Which is the completely factored form of his polynomial?

Group the terms: 5x³ + 20x² + 2x + 8 = 5x²(x + 4) + 2(x + 4). Both groups share the factor (x + 4), so factoring it out gives (5x² + 2)(x + 4). This is choice D.

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