1 Answers
Pritish Chakraborty
·2010-07-07 08:05:49
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2log24x² = 36
As the base of the log and the number are the same(2), you can apply the absorption property of logarithms, which states that ylogyx = x.
=> 4x² = 36
=> 4(x² - 9) = 0
=> x = ±3
In the original equation, x is inside a log function. Hence x > 0. So x ≠-3.