document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=311588>Question 311588</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Squared sides are lengthened by 7 cm. The area becomes 225cm squared. Find the length of a side of the original square. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #222857 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=222857\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (x+7)^2=225<BR>\n" );
document.write( "x^2+14x+49=226<BR>\n" );
document.write( "x^2+14x+49-225=0<BR>\n" );
document.write( "x^2+14x-176=0<BR>\n" );
document.write( "(x-8)(x+22)=0<BR>\n" );
document.write( "x-8=0<BR>\n" );
document.write( "x=8 ans. for the length of the original side of the square.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "(8+7)^2=225<BR>\n" );
document.write( "15^2=225<BR>\n" );
document.write( "225=225<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );