document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=810810>Question 810810</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The length of a rectangle is (x+4)cm.<BR>\n" );
document.write( "The width is (x-3)cm.<BR>\n" );
document.write( "The area of the rectangle is 78cm^2.\r<BR>\n" );
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document.write( "(a) Use this information to write down an equation in terms of x.<BR>\n" );
document.write( "(b) Write down the length and the width of the rectangle.\r<BR>\n" );
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document.write( "I haven't been taught this yet at school but it came up in one of my practice papers :)<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 #488435 by </B><A HREF=/tutors/aboutme.mpl?userid=oscargut><B>oscargut(2103)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oscargut><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=oscargut><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=488435\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) (x+4)(x-3)=78\r<BR>\n" );
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document.write( "b)\r<BR>\n" );
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document.write( "solving:   (x+4)(x-3)=78\r<BR>\n" );
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document.write( "x^2+x-12 = 78\r<BR>\n" );
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document.write( "x^2+x -90= 0\r<BR>\n" );
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document.write( "(x-9)(x+10) = 0\r<BR>\n" );
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document.write( "x = 9 or x = -10\r<BR>\n" );
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document.write( "since x must be > 0\r<BR>\n" );
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document.write( "x = 9 \r<BR>\n" );
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document.write( "Length = x+4 = 13<BR>\n" );
document.write( "width = x-3 = 6\r<BR>\n" );
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document.write( "You can ask me more at : mthman@gmail.com\r<BR>\n" );
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document.write( "Thanks </SPAN>\n" );
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