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Let f(x) = x^3 + 3x^2 + 4x - 7 and g(x) = -7x^4 + 8x^3 + x^2 - 7.. What is the coefficient of x^3 in the sum f(x) + g(x)?

 Sep 16, 2021
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1 x3     + 8x3   =   9 x3

 Sep 16, 2021

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