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multiply (5x^2 x − 4)(x 2). 5x^3 x^2 − 4x − 8 5x^3 11x^2 − 2x − 8 5x^3 10x^2 − 4x − 8 5x^3 20x^2 2x − 8

User Peracek
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1 Answer

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(5x^2 + x - 4)(x + 2) = x(5x^2 + x - 4) + 2(5x^2 + x - 4) = 5x^3 + x^2 - 4x + 10x^2 + 2x - 8 = 5x^3 + 11x^2 - 2x - 8
User Boydenhartog
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