Question 415970
(5x+7)(x^3-x+7)
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= 5x(x^3-x+7) + 7(x^3-x+7)
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= 5x^4-5x^2+35x+7x^3-7x+49
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= 5x^4 +7x^3 -5x^2 + 28x + 49
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Cheers,
Stan H.
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