document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=172941>Question 172941</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0321269470/algebrahomeworkh>Introductory Algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Find the x-intercepts\r<BR>\n" );
document.write( "\n" );
document.write( "y = x^2 + 4x - 1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #127777 by </B><A HREF=/tutors/aboutme.mpl?userid=jojo14344><B>jojo14344(1513)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jojo14344><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=127777\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <.pre><font size=4><b><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+x%5E2+%2B+4x+-+1 ALIGN=MIDDLE  ALT=\"y+=+x%5E2+%2B+4x+-+1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Continue solving the eqn by Pyth Theorem:<BR>\n" );
document.write( "where-----><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28a=1%2Cb=4c=-1%29 ALIGN=MIDDLE  ALT=\"system%28a=1%2Cb=4c=-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Then, <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F2a ALIGN=MIDDLE  ALT=\"x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F2a\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=%28-4%2B-sqrt%284%5E2-4%2A1%2A-1%29%29%2F%282%2A1%29 ALIGN=MIDDLE  ALT=\"x=%28-4%2B-sqrt%284%5E2-4%2A1%2A-1%29%29%2F%282%2A1%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=%28-4%2B-sqrt%2816%2B4%29%29%2F2=%28-4%2B-sqrt%2820%29%29%2F2=%28-4%2B-4.472136%29%2F2 ALIGN=MIDDLE  ALT=\"x=%28-4%2B-sqrt%2816%2B4%29%29%2F2=%28-4%2B-sqrt%2820%29%29%2F2=%28-4%2B-4.472136%29%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So---><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28x=%28-4%2B4.472136%29%2F2=highlight%280.236068%29%2Cx=%28-4-4.472136%29%2F2=highlight%28-4.236068%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "We see the graph:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28300%2C300%2C-6%2C6%2C-6%2C6%2Cgrid%281%29%2Cgraph%28300%2C300%2C-6%2C6%2C-6%2C6%2Cx%5E2%2B4x-1%29%2Ccircle%28-4.236068%2C0%2C.15%29%2Ccircle%280.236068%2C0%2C.15%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Thank you,<BR>\n" );
document.write( "Jojo</pre> </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );