document.write( "Question 544254: Solve: 5(2)^x-3(2)^x-1= 224 \n" ); document.write( "
Algebra.Com's Answer #358817 by lwsshak3(11628)\"\" \"About 
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Solve: 5(2)^x-3(2)^x-1= 224
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\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
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