abennyang10 abennyang10

04-08-2020
Mathematics

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Solve for X, 3^x + 3^2 = 90

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musiclover10045 musiclover10045

04-08-2020

3^x + 3^2 = 90

Simplify the known power:

3^x + 9 = 90

Subtract 9 from both sides:

3^x = 81

Take the cubic root of both sides:

X = 4

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