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11 August, 12:33

Multiply the polynomial expressions below. (7x+5) (2x^3-4x^2+9x-3)

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  1. 11 August, 13:53
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    Ans: 14x^4 - 18x^3 + 43x^2 + 24x - 15

    Explanation:

    Given:

    (7x+5) (2x^3-4x^2+9x-3)

    7x (2x^3-4x^2+9x-3) + 5 (2x^3-4x^2+9x-3)

    14x^4 - 28x^3 + 63x^2 - 21x + 10x^3 - 20x^2 + 45x - 15

    Hence,

    14x^4 - 18x^3 + 43x^2 + 24x - 15

    -i
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