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# help domain

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What is the sum of all real numbers x that are not in the domain of the function

f(x) = 1/(x^2 - 7) + 1/(x^3 - 7) + 1/(x^4 - 7)?

Apr 11, 2022

x =  ± $$\sqrt{7}$$$$\sqrt[3]{7}$$ , ± $$\sqrt[4]{7}$$       all are not in the domain              the sum would be    $$\sqrt[3]{7}$$