document.write( "Question 391533: (3x)^(log3)-(5x)^(log5)=0
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document.write( "Solve for x \n" );
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Algebra.Com's Answer #279462 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! (3x)^(log3)-(5x)^(log5)=0 \n" ); document.write( "Solve for x\r \n" ); document.write( "\n" ); document.write( "(log3)(log3x)-(log5)(log5x)=0 \n" ); document.write( "log3(log3+logx)-log5(log5+logx)=0 \n" ); document.write( "(log3)^2+(log3)(logx)-(log5)^2-(log5)(logx)=0 \n" ); document.write( "(log3)(logx)-(log5)(logx)=(log5)^2-(log3)^2 (difference of 2 squares) \n" ); document.write( "logx(log3-log5)=(log5-log3)(log5+log3) \n" ); document.write( "logx=(log5-log3)(log5+log3)/-(log5-log3) \n" ); document.write( "logx=-(log5+log3)=-1.17609 \n" ); document.write( "x=10^-1.17609=.06667 (definition of a logarithm, the base raised to the logarithm of the number is equal to the number) \n" ); document.write( "ans: x=.06667\r \n" ); document.write( "\n" ); document.write( "Check: (3*.06667)^log3-(5*.06667)^log5 = 0 \n" ); document.write( " = .464-.464 = 0 \n" ); document.write( " \n" ); document.write( " |