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Let f(x) = x^3 + 4x and g(x) = -x^7 + 5x^4 - x^3 + 3x + 1. What is the coefficient of x^3 in the sum f(x) + g(x).

 Feb 14, 2022
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+x3 - x3  =  0 x3

 Feb 14, 2022

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