document.write( "Question 241462: 6e^(2x)-16e^x=6\r
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document.write( "solve for x. please explain \n" );
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Algebra.Com's Answer #176854 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! 6e^(2x)-16e^x=6 \n" ); document.write( "3e^2x - 8e^x - 3 = 0 \n" ); document.write( "It's a quadratic in e^x. You can sub y for e^x if it makes it clearer. \n" ); document.write( "--> y^2 - 8y - 3 = 0 \n" ); document.write( "I'll just do it with e^x \n" ); document.write( "(3e^x + 1)*(e^x - 3) = 0 \n" ); document.write( "e^x = 3 \n" ); document.write( "x = ln(3) \n" ); document.write( "---------- \n" ); document.write( "e^x = -1/3 Ignore this one, no exponent will give a negative (in real numbers) \n" ); document.write( " \n" ); document.write( " |