document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=308520>Question 308520</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am trying to solve the following:  x2 -4x -3 = 0.  I can get as far as 4 plus or minus the sqrt of 28 over 2.  I don't understand why this becomes 2 plus or minus the sqrt of 7.  It seems to me that it should be 2 plus or minus the sqrt of 14.\r<BR>\n" );
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document.write( "Thanks.  Marieann </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #220606 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=220606\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I am trying to solve the following:  x2 -4x -3 = 0.  I can get as far as 4 plus or minus the sqrt of 28 over 2.  I don't understand why this becomes 2 plus or minus the sqrt of 7.  It seems to me that it should be 2 plus or minus the sqrt of 14.\r<BR>\n" );
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document.write( "x^2-4x-3\r<BR>\n" );
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document.write( "a=1 b=-4 c=-3\r<BR>\n" );
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document.write( "root x1 = -(-4)+sqrt((-4)^2-4*1*-3  /2\r<BR>\n" );
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document.write( "x1= 4 + sqrt (16+12) /2<BR>\n" );
document.write( "x1 = 4 + sqrt28 /2 <BR>\n" );
document.write( "x1= (4 + sqrt( 2*2*7 ))/2<BR>\n" );
document.write( "x1= (4+ sqrt4*sqrt7)/2<BR>\n" );
document.write( "x1=  (4+2sqrt7)/ 2\r<BR>\n" );
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document.write( "Similarly for x2 </SPAN>\n" );
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