document.write( "Question 303982: Solve: ln (x-5) + ln ( x+4)=ln 36 \n" ); document.write( "
Algebra.Com's Answer #217814 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Solve: ln (x-5) + ln ( x+4)=ln 36 \n" ); document.write( "--------- \n" ); document.write( "ln[(x-5)(x+4)] = ln[36] \n" ); document.write( "--- \n" ); document.write( "x^2-x-20 = 36 \n" ); document.write( "--- \n" ); document.write( "x^2-x-56 = 0 \n" ); document.write( "(x-8)(x+7) = 0 \n" ); document.write( "x = 8 or x = -7 \n" ); document.write( "---- \n" ); document.write( "Only x = 8 is an acceptable solution. \n" ); document.write( "================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "================== \n" ); document.write( " |