document.write( "Question 1078094: How do you expand log10 x+log10(3x-5)=log10^2? I tried to solve this equation but I can't figure it out. \n" ); document.write( "
Algebra.Com's Answer #692564 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! log10 x+log10(3x-5)=log10 2 \n" ); document.write( "adding logs is multiplication of what the log is of. \n" ); document.write( "x(3x-5)=2, by raising everything to the 10 power. \n" ); document.write( "3x^2-5x-2=0 \n" ); document.write( "(3x+1)(x-2)=0 \n" ); document.write( "x=-1/3, 2. Logs can't be negative, so x=2 \n" ); document.write( "check \n" ); document.write( "log10 2+ log10(1)=log10 2 \n" ); document.write( "log10 (1)=0 \n" ); document.write( "log10 2=1og 10 2 \n" ); document.write( " \n" ); document.write( " |