document.write( "Question 311366: log(x)=log(3)+log(x-6)\r
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document.write( "log(X)+log(x-5)=log(6)\r
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document.write( "I really need help with this 2 problems!!! i know the answers but i need to know how to do them answer for both of them is 9 \n" );
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Algebra.Com's Answer #222700 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! log(x)=log(3)+log(x-6) \n" ); document.write( "log(x) = log[3(x-6)] \n" ); document.write( "x = 3(x-6) \n" ); document.write( "x = 3x - 18 \n" ); document.write( "2x = 18 \n" ); document.write( "x = 9 \n" ); document.write( "------------------------ \n" ); document.write( " \n" ); document.write( "log(X)+log(x-5)=log(6) \n" ); document.write( "log(x(x-5)) = log6 \n" ); document.write( "x(x-6) = 6 \n" ); document.write( "x^2-6x-6 = 0 \n" ); document.write( "x = [6+- sqrt(36 -4*-6)]/2 \n" ); document.write( "--- \n" ); document.write( "x = [6 +- sqrt(60)]/2 \n" ); document.write( "x = [6 +- 2sqrt(15)]/2 \n" ); document.write( "x = [3 +- sqrt(15)] \n" ); document.write( "Positive solution: \n" ); document.write( "x = 3 + sqrt(15) \n" ); document.write( "==================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "==================== \n" ); document.write( " \n" ); document.write( " |