document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=360025>Question 360025</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, I'm studying for a test and the problem below seems so simple, but I can't figure this out:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%2Fx++-++3%2F%28x%2B1%29+++=+7 ALIGN=MIDDLE  ALT=\"4%2Fx++-++3%2F%28x%2B1%29+++=+7\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "I multiplied by the lcd and got:\r<BR>\n" );
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document.write( "7x^2 + 6x - 4 = 0\r<BR>\n" );
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document.write( "I tried using the quadratic formula and got:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-6+%2B+sqrt%28-76%29%29%2F14 ALIGN=MIDDLE  ALT=\"%28-6+%2B+sqrt%28-76%29%29%2F14\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-6+-+sqrt%28-76%29%29%2F14 ALIGN=MIDDLE  ALT=\"%28-6+-+sqrt%28-76%29%29%2F14\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "I get confused when I get a negative number in a square root, because we're learning about complex numbers in the same chapter so I don't understand why I can simplify this without using an imaginary number. \r<BR>\n" );
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document.write( "The answer on the review sheet is:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-3+-+sqrt%2837%29%29%2F7 ALIGN=MIDDLE  ALT=\"x+=+%28-3+-+sqrt%2837%29%29%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-3+%2B+sqrt%2837%29%29%2F7 ALIGN=MIDDLE  ALT=\"x+=+%28-3+%2B+sqrt%2837%29%29%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "I honestly don't know how to get there. I simplified the sqrt(-76) and got 2sqrt(38) so how I'm supposed to end up with 37 in the sqrt has me really lost.\r<BR>\n" );
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document.write( "Please share your knowledge with me! I'm a little worried after struggling with this for a while now :-/\r<BR>\n" );
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document.write( "Thanks for your time.\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #256867 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=256867\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> it appears that you missed something in the QF\r<BR>\n" );
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document.write( "b^2-4ac = 6^2 - (4)(7)(-4) = 36 - (-112) = 148 = 4 * 37 </SPAN>\n" );
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