document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=251272>Question 251272</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A mirror 2 feet by 6 feet is to be mounted on a door so that there is a uniform edge between the mirror and the door all around the mirror. How wide will the edge between the mirror and the door be if the area of the edge is 9 square feet? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #183124 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=183124\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2*6=12 ft^2 is the area of the mirror.<BR>\n" );
document.write( "(2+2x)(6+2x)=12+9<BR>\n" );
document.write( "12+16x+4x^2=21<BR>\n" );
document.write( "4x^2+16x+12-21=0<BR>\n" );
document.write( "4x^2+16x-9=0<BR>\n" );
document.write( "(2x-1)(2x+9)=0<BR>\n" );
document.write( "2x-1=0<BR>\n" );
document.write( "2x=1<BR>\n" );
document.write( "x=.5 ft. is the width of the edge between the morror & the door edge.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "(2+2*.5)(6+2*.5)=12+9<BR>\n" );
document.write( "(2+1)(6+1)=21<BR>\n" );
document.write( "3*7=21<BR>\n" );
document.write( "21=21 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );