document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=177410>Question 177410</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help. Solve the following 15x^4-28x^2+5=0. I know that eventually I have to use the quadratic equation, but I am unsure of how to get the problem into a standard form to use.  Thank you.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #132461 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=132461\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 15x^4-28x^2+5=0<BR>\n" );
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document.write( "15x^4 - 25x^2 - 3x^2 + 5 = 0\r<BR>\n" );
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document.write( "5x^2(3x^2 - 5) - (3x^2 - 5) = 0\r<BR>\n" );
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document.write( "(3x^2 - 5)(5x^2 - 1) = 0<BR>\n" );
document.write( "x^2 = 5/3 or x^2 = 1/5<BR>\n" );
document.write( "x = +/-sqrt(5/3) or x = +/-sqrt(1/5)\r<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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