document.write( "Question 43262: solve x\r
\n" ); document.write( "\n" ); document.write( "logx 25 = -2\r
\n" ); document.write( "\n" ); document.write( "***the x is subscript of log \n" ); document.write( "
Algebra.Com's Answer #28295 by AnlytcPhil(1806)\"\" \"About 
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solve for x \r\n" );
document.write( "logx 25 = -2 \r\n" );
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document.write( "Use the rule that says: \r\n" );
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document.write( "A logarithmic equation of the form\r\n" );
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document.write( "  logBA = C\r\n" );
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document.write( "is equivalent to and can be rewritten\r\n" );
document.write( "as the exponential equation\r\n" );
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document.write( "     BC = A\r\n" );
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document.write( "So we rewrite\r\n" );
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document.write( "   logx25 = -2\r\n" );
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document.write( "as\r\n" );
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document.write( "    x-2 = 25\r\n" );
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document.write( "Then we write the x-2 as 1/x2\r\n" );
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document.write( "   1/x2 = 25\r\n" );
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document.write( "Multiply both sides by x2:\r\n" );
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document.write( "      1 = 25x2\r\n" );
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document.write( "Divide both sides by 25 \r\n" );
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document.write( "   1/25 = x2 \r\n" );
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document.write( "Take positive square roots of both sides\r\n" );
document.write( "(logarithm bases must be positive and ¹ 1,\r\n" );
document.write( "by definition)\r\n" );
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document.write( "    1/5 = x\r\n" );
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document.write( "Edwin
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