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2.52x = 8

Taking (natural) logs: 2x*ln(2.5) = ln(8)

so 2x = ln(8)/ln(2.5) = 2.0794/0.9163 = 2.2694 approx.

and therefore, x = 2.2694/2 = 1.1347 approx.

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โˆ™ 2013-09-09 13:36:20
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Q: What is the solution set of 2.5 to the power of 2x equals 8?
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