document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=791496>Question 791496</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help with (n+3)(n-7)=4.<BR>\n" );
document.write( "I tried it and got an incorrect answer. i attempted like so:<BR>\n" );
document.write( "(n+3)(n-7)=4<BR>\n" );
document.write( "n^2-4n-21=4<BR>\n" );
document.write( "n^2-4n=25<BR>\n" );
document.write( "n^2+n=-5<BR>\n" );
document.write( "sqrt(n^2+n)=sqrt(-5)<BR>\n" );
document.write( "and thats when i knew i was wrong </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #479589 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=479589\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (n+3)(n-7)=4\r<BR>\n" );
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document.write( "n^2 - 7n + 3n - 21 = 4\r<BR>\n" );
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document.write( "n^2 - 7n + 3n - 21 - 4 = 0\r<BR>\n" );
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document.write( "n^2 - 4n - 25 = 0\r<BR>\n" );
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document.write( "Now I'm going to use the quadratic formula to solve for n\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n+=+%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29 ALIGN=MIDDLE  ALT=\"n+=+%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"   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=n+=+%28-%28-4%29%2B-sqrt%28%28-4%29%5E2-4%281%29%28-25%29%29%29%2F%282%281%29%29 ALIGN=MIDDLE  ALT=\"n+=+%28-%28-4%29%2B-sqrt%28%28-4%29%5E2-4%281%29%28-25%29%29%29%2F%282%281%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a+=+1 ALIGN=MIDDLE  ALT=\"a+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b+=+-4 ALIGN=MIDDLE  ALT=\"b+=+-4\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c+=+-25 ALIGN=MIDDLE  ALT=\"c+=+-25\"   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=n+=+%284%2B-sqrt%2816-%28-100%29%29%29%2F%282%29 ALIGN=MIDDLE  ALT=\"n+=+%284%2B-sqrt%2816-%28-100%29%29%29%2F%282%29\"   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=n+=+%284%2B-sqrt%2816%2B100%29%29%2F%282%29 ALIGN=MIDDLE  ALT=\"n+=+%284%2B-sqrt%2816%2B100%29%29%2F%282%29\"   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=n+=+%284%2B-sqrt%28116%29%29%2F2 ALIGN=MIDDLE  ALT=\"n+=+%284%2B-sqrt%28116%29%29%2F2\"   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=n+=+%284%2Bsqrt%28116%29%29%2F2 ALIGN=MIDDLE  ALT=\"n+=+%284%2Bsqrt%28116%29%29%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n+=+%284-sqrt%28116%29%29%2F2 ALIGN=MIDDLE  ALT=\"n+=+%284-sqrt%28116%29%29%2F2\"   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=n+=+%284%2B2%2Asqrt%2829%29%29%2F2 ALIGN=MIDDLE  ALT=\"n+=+%284%2B2%2Asqrt%2829%29%29%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n+=+%284-2%2Asqrt%2829%29%29%2F2 ALIGN=MIDDLE  ALT=\"n+=+%284-2%2Asqrt%2829%29%29%2F2\"   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=n+=+2%2Bsqrt%2829%29 ALIGN=MIDDLE  ALT=\"n+=+2%2Bsqrt%2829%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n+=+2-sqrt%2829%29 ALIGN=MIDDLE  ALT=\"n+=+2-sqrt%2829%29\"   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=n+=+7.385165 ALIGN=MIDDLE  ALT=\"n+=+7.385165\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n+=+-3.385165 ALIGN=MIDDLE  ALT=\"n+=+-3.385165\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Exact Solutions: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n+=+2%2Bsqrt%2829%29 ALIGN=MIDDLE  ALT=\"n+=+2%2Bsqrt%2829%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n+=+2-sqrt%2829%29 ALIGN=MIDDLE  ALT=\"n+=+2-sqrt%2829%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Approximate Solutions: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n+=+7.385165 ALIGN=MIDDLE  ALT=\"n+=+7.385165\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n+=+-3.385165 ALIGN=MIDDLE  ALT=\"n+=+-3.385165\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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