document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=189087>Question 189087</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i need you help.! can you please help me solve this equation??\r<BR>\n" );
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document.write( "the length of a rectangle is 3 inches more than its width.<BR>\n" );
document.write( "If the area of the rectangle is 180 square inches, write an equation for the above situation </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #141906 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=141906\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the length of a rectangle is 3 inches more than its width.<BR>\n" );
document.write( "If the area of the rectangle is 180 square inches, write an equation for the above situation<BR>\n" );
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document.write( "Let x = the width<BR>\n" );
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document.write( "It says,\"the length of a rectangle is 3 inches more than its width.\" therefore:<BR>\n" );
document.write( "(x+3) = the length<BR>\n" );
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document.write( "Area = Length * Width, therefore:<BR>\n" );
document.write( "A = x * (x+3)<BR>\n" );
document.write( "A = x^2 + 3x; is the equation<BR>\n" );
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document.write( "It says, area = 180, therefore:<BR>\n" );
document.write( "x^2 + 3x = 180<BR>\n" );
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document.write( "Subtract 180 from both sides, you have a quadratic equation:<BR>\n" );
document.write( "x^2 + 3x - 180 = 0<BR>\n" );
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document.write( "This will factor to:<BR>\n" );
document.write( "(x + 15)(x - 12) = 0<BR>\n" );
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document.write( "We want the positive solution here:<BR>\n" );
document.write( "x = + 12 is the width<BR>\n" );
document.write( "then<BR>\n" );
document.write( "12 + 3 = 15 is the length<BR>\n" );
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document.write( "Check by finding the area: 12 * 15 = 180\r<BR>\n" );
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document.write( " </SPAN>\n" );
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