document.write( "Question 544254: Solve: 5(2)^x-3(2)^x-1= 224 \n" ); document.write( "
Algebra.Com's Answer #358817 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! Solve: 5(2)^x-3(2)^x-1= 224 \n" ); document.write( "** \n" ); document.write( "5(2)^x-3(2)^x-1= 224 \n" ); document.write( "2^(x-1)(5*2-3)=224 \n" ); document.write( "2^(x-1)(7)=224 \n" ); document.write( "2^(x-1)=224/7 \n" ); document.write( "Take log of both sides \n" ); document.write( "(x-1) log(2)=log(224/7) \n" ); document.write( "x-1=log(224/7)/log2=5 \n" ); document.write( "x=5+1=6 \n" ); document.write( "x=6 \n" ); document.write( " |