Немогу ришыть 3^x-2 =81

Question

Немогу ришыть 3^x-2 =81

Comments

степень х или [-2?

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x-2?

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Степень

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так x или x-2?

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x-2

Answer 1

3^(x-2) = 3^4
x-2 = 4
x = 6