document.write( "Question 726814: Stuck and need help on solving this \r
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document.write( "7x-8y=24
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document.write( "xy^2=1 \n" );
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Algebra.Com's Answer #444813 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! 7x-8y=24 \n" ); document.write( "xy^2=1 \n" ); document.write( "---------------- \n" ); document.write( "xy^2=1 \n" ); document.write( "x = 1/y^2 \n" ); document.write( "------- \n" ); document.write( "7x-8y=24 \n" ); document.write( "7/y^2 - 8y = 24 \n" ); document.write( "Multiply by y^2 \n" ); document.write( "7 - 8y^3 = 24y^2 \n" ); document.write( "8y^3 + 24y - 7 = 0 \n" ); document.write( "The zeroes can be found by graphical or numerical methods. \n" ); document.write( "y =~ 0.284 (the only real # solution, by graphical methods) \n" ); document.write( "The other 2 zeroes are complex numbers. \n" ); document.write( "Are you in a class that is familiar with those? \n" ); document.write( " \n" ); document.write( " |