document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=177383>Question 177383</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help. If the sides of a square are lengthened by 8cm, the area becomes 169cm^2.  Find the length of the original square. <BR>\n" );
document.write( "Thank you. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #132426 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=132426\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let s = the length of the side of the original square.<BR>\n" );
document.write( "If you increase this by 8 cm (s+8) and square it ((s+8)*(s+8)) you get 169 sq.cm. So you can write:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28s%2B8%29%5E2+=+169 ALIGN=MIDDLE  ALT=\"%28s%2B8%29%5E2+=+169\"   DISABLED_style= \"max-width:90%; height:auto;\" > Square the left side.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s%5E2%2B16s%2B64+=+169 ALIGN=MIDDLE  ALT=\"s%5E2%2B16s%2B64+=+169\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract 169 from both sides.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s%5E2%2B16s-105+=+0 ALIGN=MIDDLE  ALT=\"s%5E2%2B16s-105+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" > Factor this quadratic equation.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28s-5%29%28s%2B21%29+=+0 ALIGN=MIDDLE  ALT=\"%28s-5%29%28s%2B21%29+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" > Apply the zero product rule:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s-5+=+0 ALIGN=MIDDLE  ALT=\"s-5+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s%2B2+=+0 ALIGN=MIDDLE  ALT=\"s%2B2+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" > which means that...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s+=+5 ALIGN=MIDDLE  ALT=\"s+=+5\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s+=+-21 ALIGN=MIDDLE  ALT=\"s+=+-21\"   DISABLED_style= \"max-width:90%; height:auto;\" > Discard the negative solution as the length of the sides can only be positive.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28s+=+5%29 ALIGN=MIDDLE  ALT=\"highlight%28s+=+5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >cm  This is the length of the side of the original square.<BR>\n" );
document.write( "Check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28s%2B8%29%5E2+=+169 ALIGN=MIDDLE  ALT=\"%28s%2B8%29%5E2+=+169\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%2B8%29%5E2+=+169 ALIGN=MIDDLE  ALT=\"5%2B8%29%5E2+=+169\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=13%5E2+=+169 ALIGN=MIDDLE  ALT=\"13%5E2+=+169\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=169+=+169 ALIGN=MIDDLE  ALT=\"169+=+169\"   DISABLED_style= \"max-width:90%; height:auto;\" > OK! </SPAN>\n" );
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