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Mathematics · Indices, logarithms and surds

MathematicsIndices, logarithms and surdsJAMB

Solve 9^(x − 1) = 27^(x − 3).

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Answer: A. 7

3^(2x − 2) = 3^(3x − 9), so 2x − 2 = 3x − 9 and x = 7.

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