document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=358134>Question 358134</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An open box is to be made from a square piece of sheet metal by removing a square of side 4 inches from each corner and turning up the edges. If the volume of the box is to be 676 cubic inches, what is the length of the sides of the square of the sheet metal.\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #255643 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=255643\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x be the sides of the original square piece of sheet metal.<BR>\n" );
document.write( "4(x-2*4)^2=676<BR>\n" );
document.write( "4(x-8)^2=676<BR>\n" );
document.write( "4(x^2-16x+64)=676<BR>\n" );
document.write( "4x^2-64x+256-676=0<BR>\n" );
document.write( "4x^2-64x-420=0<BR>\n" );
document.write( "4(x^2-16x-105)=0<BR>\n" );
document.write( "(x-21)(x+5)=0<BR>\n" );
document.write( "x-21=0<BR>\n" );
document.write( "x=21 ans. for the side measurement of the sheet of metal.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "4(21-2*4)^2=676<BR>\n" );
document.write( "4(21-8)^2=676<BR>\n" );
document.write( "4*13^2=676<BR>\n" );
document.write( "4*169=676<BR>\n" );
document.write( "676=676 </SPAN>\n" );
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