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distribute. (8t-3)(t^2+2t+9

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    Distribute:
    (8t-3)(t^2+2t+9)
    =8t(t^2+2t+9)-3(t^2+2t+9)
    =8t^3+16t^2+72t -3t^2-6t-27
    =8t^3+13t^2+66t-27

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