document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=240936>Question 240936</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do you solve the following quadratic equations:\r<BR>\n" );
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document.write( "-6(u+5)^2=120\r<BR>\n" );
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document.write( "3s^2-1=7s^2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #176489 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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/cgi-bin/show-face.mpl?user=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=176489\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> -6(u+5)^2=120<BR>\n" );
document.write( "(u+5)^2=-20<BR>\n" );
document.write( "u^2+10u+25=-20<BR>\n" );
document.write( "u^2+10u+45=0<BR>\n" );
document.write( "u^2+10u     =-45<BR>\n" );
document.write( "u^2+10u+25=-45+25 Completing the square<BR>\n" );
document.write( "(u+5)^2=-20<BR>\n" );
document.write( "u+5=+-sqrt(-20) Take sqrt of each side.<BR>\n" );
document.write( "u=-5+-2sqrt(-5)<BR>\n" );
document.write( "u=-5+2sqrt(5)i, u=-5-2sqrt(5)i<BR>\n" );
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document.write( "Ed </SPAN>\n" );
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