document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=135617>Question 135617</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Write a quadratic equation for which the following are solutions for x: ± 3i<BR>\n" );
document.write( "This one has me a bit confused. Here's what I get<BR>\n" );
document.write( "x = ±i sqrt 9<BR>\n" );
document.write( "x = ± sqrt -9<BR>\n" );
document.write( "x^2=-9<BR>\n" );
document.write( "x^2+9=0<BR>\n" );
document.write( "That's not a complete quadratic equaiton, but I don't know what to do next or if I'm doing it right to begin with. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #99354 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=99354\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I see nothing wrong with what you have done and your answer is correct.<BR>\n" );
document.write( "When you say that it is not a \"complete\" quadratic equation, what you mean is that in the general form:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ax%5E2%2Bbx%2Bc+=+0 ALIGN=MIDDLE  ALT=\"ax%5E2%2Bbx%2Bc+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" > , b happens to be zero but that doesn't mean that you don't have a quadratic equation.<BR>\n" );
document.write( "The proof, of course, is to solve your answer to see if you get the given solutions of: x = 3i and x = -3i\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2%2B9+=+0 ALIGN=MIDDLE  ALT=\"x%5E2%2B9+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract 9 from both sides.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+=+-9 ALIGN=MIDDLE  ALT=\"x%5E2+=+-9\"   DISABLED_style= \"max-width:90%; height:auto;\" > Take the square root of both sides.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+sqrt%28-9%29 ALIGN=MIDDLE  ALT=\"x+=+sqrt%28-9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+-sqrt%28-9%29 ALIGN=MIDDLE  ALT=\"x+=+-sqrt%28-9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28-9%29+=+3sqrt%28-1%29 ALIGN=MIDDLE  ALT=\"sqrt%28-9%29+=+3sqrt%28-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3i ALIGN=MIDDLE  ALT=\"3i\"   DISABLED_style= \"max-width:90%; height:auto;\" > so...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+3i ALIGN=MIDDLE  ALT=\"x+=+3i\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+-3i ALIGN=MIDDLE  ALT=\"x+=+-3i\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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