document.write( "Question 43491: Solve: -x^4+200=102x^2. \n" ); document.write( "
Algebra.Com's Answer #28476 by stanbon(75887)\"\" \"About 
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Solve: -x^4+200=102x^2.\r
\n" ); document.write( "\n" ); document.write( "-x^4-102x^2+200=0
\n" ); document.write( "x^4+102x^2-200=0\r
\n" ); document.write( "\n" ); document.write( "Using the quadratic formula you get:\r
\n" ); document.write( "\n" ); document.write( "x^2=[-102+sqrt(102^2-4(-200)]/2
\n" ); document.write( "x^2=[-102+sqrt11204]/2
\n" ); document.write( "x^2=[3.84894898]/2
\n" ); document.write( "x^2=1.92447449
\n" ); document.write( "x==1.38972543 or x=-1.38972543\r
\n" ); document.write( "\n" ); document.write( "OR
\n" ); document.write( "x^2=[-102-sqrt(102^2-4(-200)]/2
\n" ); document.write( "x^2=[-102-sqrt11204]/2
\n" ); document.write( "x^2=[-207.848990]/2
\n" ); document.write( "x^2=-103.92
\n" ); document.write( "x=10.19i or x=-10.19i\r
\n" ); document.write( "\n" ); document.write( "Cheers,
\n" ); document.write( "stan H.\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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