document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=773780>Question 773780</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The area of a rectangle is 160 square inches. The length is four less than three times the width. Find the dimensions of the rectangle. (Show this algebraically...including quadratic.) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #471840 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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/cgi-bin/show-face.mpl?user=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=471840\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Width = x<BR>\n" );
document.write( "Length = 3x - 4<BR>\n" );
document.write( "Area of Rectangle = length * width<BR>\n" );
document.write( "160 = (3x - 4)* x<BR>\n" );
document.write( "160 = 3x^2 - 4x<BR>\n" );
document.write( "3x^2 - 4x - 160 = 0<BR>\n" );
document.write( "(3x + 20)(x - 8) = 0<BR>\n" );
document.write( "3x + 20 = 0<BR>\n" );
document.write( "3x = -20<BR>\n" );
document.write( "x = -20/3 (no answer x < 0)<BR>\n" );
document.write( "x - 8 = 0<BR>\n" );
document.write( "x = 8<BR>\n" );
document.write( "Width = 8ins<BR>\n" );
document.write( "Length = 20ins<BR>\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( ":-) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );