document.write( "Question 726814: Stuck and need help on solving this \r
\n" ); document.write( "\n" ); document.write( "7x-8y=24
\n" ); document.write( "xy^2=1
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Algebra.Com's Answer #444813 by Alan3354(69443)\"\" \"About 
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
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\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?
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