document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=50657>Question 50657</A>: <I><SPAN STYLE=\"word-break: break-all;\"> x^3-x^2+4*x-4=0\r<BR>\n" );
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document.write( "thanks a million:) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #33734 by </B><A HREF=/tutors/aboutme.mpl?userid=rapaljer><B>rapaljer(4671)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rapaljer><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=rapaljer><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=33734\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is factoring by grouping.  Group the first two and last two terms together.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E3-x%5E2%2B4%2Ax-4=0 ALIGN=MIDDLE  ALT=\"x%5E3-x%5E2%2B4%2Ax-4=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2%28x-1%29+%2B+4%28x-1%29+=+0 ALIGN=MIDDLE  ALT=\"x%5E2%28x-1%29+%2B+4%28x-1%29+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Notice that there is a common factor of (x-1):<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28x-1%29+%28x%5E2%2B4%29+=+0 ALIGN=MIDDLE  ALT=\"+%28x-1%29+%28x%5E2%2B4%29+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=1 ALIGN=MIDDLE  ALT=\"x=1\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+=+-4 ALIGN=MIDDLE  ALT=\"x%5E2+=+-4\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Are you solving with complex numbers or real numbers only?  If real numbers only, then the only answer you have to worry about is x=1.  End of problem, since real numbers squared cannot equal a negative.\r<BR>\n" );
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document.write( "However, if complex numbers are allowed, then <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+=+-4 ALIGN=MIDDLE  ALT=\"x%5E2+=+-4\"   DISABLED_style= \"max-width:90%; height:auto;\" > gives two solutions:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=+sqrt%28-4%29 ALIGN=MIDDLE  ALT=\"x=+sqrt%28-4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-sqrt%28-4%29+ ALIGN=MIDDLE  ALT=\"x=-sqrt%28-4%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=+2i ALIGN=MIDDLE  ALT=\"x=+2i\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=+-2i ALIGN=MIDDLE  ALT=\"x=+-2i\"   DISABLED_style= \"max-width:90%; height:auto;\" > in addition to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=+1 ALIGN=MIDDLE  ALT=\"x=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "R^2 at SCC\r<BR>\n" );
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