document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=280270>Question 280270</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The area of a rectangle is 165 ft (2)squared. The length of the rectangle is 4 feet longer than the width. Find the length and width. I need to know the equation and how to solve. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #203694 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=203694\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The area of a rectangle is 165 ft (2)squared. The length of the rectangle is 4 feet longer than the width. Find the length and width. I need to know the equation and how to solve.<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Let the width be \"x\":<BR>\n" );
document.write( "Then the length is \"x+4\"<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "Area = x(x+4)<BR>\n" );
document.write( "165 = x^2+4x<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x^2 + 4x - 165 = 0<BR>\n" );
document.write( "Quadratic formula:<BR>\n" );
document.write( "x = [-4 +- sqrt(16-4*-165)]/2<BR>\n" );
document.write( "x = [-4 +- sqrt(676)]/2<BR>\n" );
document.write( "x = [-4 +- 26]/2<BR>\n" );
document.write( "Positive solution:<BR>\n" );
document.write( "x = [22/2]<BR>\n" );
document.write( "x = 11 ft. (width)<BR>\n" );
document.write( "x+4 = 15 ft (length)<BR>\n" );
document.write( "===========================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );