document.write( "Question 242841: I need help solving this problem: solve for x: 28^x=10^(-3x) I really need to understand this. Please show and explain all steps. Thanks in advance :D \n" ); document.write( "
Algebra.Com's Answer #177804 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! I need help solving this problem: solve for x: 28^x=10^(-3x) I really need to understand this. Please show and explain all steps. \n" ); document.write( "-------------------------------- \n" ); document.write( "28^x=10^(-3x) \n" ); document.write( "------------- \n" ); document.write( "Take the log of both sides to get: \n" ); document.write( "x*log(28) = -3x \n" ); document.write( "--- \n" ); document.write( "3x + x*log(28) = 0 \n" ); document.write( "--- \n" ); document.write( "Factor: \n" ); document.write( "x(3+log(28)) = 0 \n" ); document.write( "x = 0 \n" ); document.write( "=========== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |