Mathematics, 20.08.2021 02:40 friskisthebest1

Chứng minh rằng: A = 1 + 3 + 5 + 7 + ... + n là số chính phương (n lẻ).

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For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

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Chứng minh rằng: A = 1 + 3 + 5 + 7 + ... + n là số chính phương (n lẻ)....

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