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Let   f(x) = x^3 + 3x ^2 + 4x - 7 and  g(x) = -7x^4 + 5x^3 +x^2 - 7. What is the coefficient of x^2 in the sum f(x) + g(x)?

 Jul 4, 2021
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3 x^2      +     x^2      = 4 x^2

 Jul 4, 2021

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