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What is the product of 3x+4 and 6x^{2} −5x+7?

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(3x + 4)(6 {x}^(2) - 5x + 7) \\ = 18 {x}^(3) - 15 {x}^(2) + 21x + 24 {x}^(2) - 20x + 28 \\ = 18 {x}^(3) + 9 {x}^(2) + x + 28

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