document.write( "Question 371060: Solve the equation. 15^x=5^(x+2) \n" ); document.write( "
Algebra.Com's Answer #264367 by Edwin McCravy(20054)\"\" \"About 
You can put this solution on YOUR website!
\"15%5Ex=5%5E%28x%2B2%29\"
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document.write( "Take logs of both sides\r\n" );
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document.write( "\"log%2815%5Ex%29=log%285%5E%28x%2B2%29%29\"\r\n" );
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document.write( "\"x%2Alog%2815%29=%28x%2B2%29log%285%29\"\r\n" );
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document.write( "\"x%2Alog%2815%29=x%2Alog%285%29%2B2%2Alog%285%29\"\r\n" );
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document.write( "Get both terms that contain x alone on the left.\r\n" );
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document.write( "\"x%2Alog%2815%29-x%2Alog%285%29=2%2Alog%285%29\"\r\n" );
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document.write( "Factor out x\r\n" );
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document.write( "\"x%28log%2815%29-log%285%29%29=2%2Alog%285%29\"\r\n" );
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document.write( "Divide both sides by that big parentheses:\r\n" );
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document.write( "\"x=%282%2Alog%285%29%29%2F%28log%2815%29-log%285%29%29+\"\r\n" );
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document.write( "You can get the numerical approximation from that \r\n" );
document.write( "or you can simplify some more.\r\n" );
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document.write( "\"x=%282%2Alog%285%29%29%2Flog%2815%2F5%29+\"\r\n" );
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document.write( "\"x=%282%2Alog%285%29%29%2Flog%283%29+\"\r\n" );
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document.write( "\"x=2.929947041\"\r\n" );
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document.write( "Edwin

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