document.write( "Question 28564: Solve for x:
\n" );
document.write( "log(3x+7)+log(x-2)=1 \n" );
document.write( "
Algebra.Com's Answer #15560 by venugopalramana(3286)![]() ![]() You can put this solution on YOUR website! log(3x+7)+log(x-2)=1 \n" ); document.write( "log{(3x+7)*(x-2)}=1...SINCE LOG(XY)=LOG(X)+LOG(Y)..NOW TAKING ANTILOGS..WE GET \n" ); document.write( "(3x+7)(x-2)=10....SINCE LOG(10)=1 \n" ); document.write( "3X^2-6X+7X-14-10=0 \n" ); document.write( "3X^2+X-24=0 \n" ); document.write( "3X^2+9X-8X-24=0 \n" ); document.write( "3X(X+3)-8(X+3)=0 \n" ); document.write( "(3X-8)(X+3)=0 \n" ); document.write( "3X-8=0...OR...X=8/3.... \n" ); document.write( "X+3=0..OR...X=-3...BUT THIS LEADS TO LOG OF NEGATIVE NUMBERS WHICH DO NOT EXIST.HENCE \n" ); document.write( "X=8/3 IS THE SOLUTION \n" ); document.write( " |