document.write( "Question 113826: 8. Solve and Check the Following Equations:\r
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Algebra.Com's Answer #82835 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
\"log%286%2C%28x%29%29%2Blog%286%2C%28x-2%29%29=log%286%2C%2815%29%29\" Start with the given equation\r
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\n" ); document.write( "\n" ); document.write( "\"log%286%2C%28x%28x-2%29%29%29=log%286%2C%2815%29%29\" Combine the logs using the identity \"log%28b%2C%28x%29%29%2Blog%28b%2C%28y%29%29=log%28b%2C%28x%2Ay%29%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"log%286%2C%28x%5E2-2x%29%29=log%286%2C%2815%29%29\" Distribute\r
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\n" ); document.write( "\n" ); document.write( "Since the base of the logs are equal, the arguments (the stuff inside the logs are equal). So \"x%5E2-2x=15\"\r
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\n" ); document.write( "\n" ); document.write( "So let's solve \"x%5E2-2x=15\"\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E2-2x=15\" Start with the given equation\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E2-2x-15=0\" Subtract 15 from both sides\r
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\n" ); document.write( "\n" ); document.write( "\"%28x-5%29%28x%2B3%29=0\" Factor the left side (note: if you need help with factoring, check out this
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\n" ); document.write( "\n" ); document.write( "Now set each factor equal to zero:\r
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\n" ); document.write( "\n" ); document.write( "\"x-5=0\" or \"x%2B3=0\"\r
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\n" ); document.write( "\n" ); document.write( "\"x=5\" or \"x=-3\" Now solve for x in each case\r
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\n" ); document.write( "\n" ); document.write( "So our possible solutions are \"x=5\" or \"x=-3\"\r
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\n" ); document.write( "\n" ); document.write( "However, since you cannot take the log of a negative number, the only solution is \"x=5\"\r
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\n" ); document.write( "\n" ); document.write( "Let's check the solution \"x=5\"\r
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\n" ); document.write( "\n" ); document.write( "\"log%286%2C%28x%5E2-2x%29%29=log%286%2C%2815%29%29\" Start with the equation found on the third step. \r
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\n" ); document.write( "\n" ); document.write( "\"log%286%2C%285%5E2-2%285%29%29%29=log%286%2C%2815%29%29\" Plug in \"x=5\"\r
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\n" ); document.write( "\n" ); document.write( "\"log%286%2C%2825-10%29%29=log%286%2C%2815%29%29\" Square and multiply\r
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\n" ); document.write( "\n" ); document.write( "\"log%286%2C%2815%29%29=log%286%2C%2815%29%29\" Subtract. Since both sides of the equation are equal, this solution is verified.\r
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\n" ); document.write( "\n" ); document.write( "So the solution \"x=5\" is verified
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