document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=811149>Question 811149</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can I please get some help to solve the following Quadratic Equation and show full working. I would really appreciate it.\r<BR>\n" );
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document.write( "The length of a poster is 10cm longer than its width. If the area of the poster is 1200cm2, what is the width of the poster? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #488621 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20849)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=488621\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "let's the length of a poster be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a ALIGN=MIDDLE  ALT=\"a\"   DISABLED_style= \"max-width:90%; height:auto;\" > and the width <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b ALIGN=MIDDLE  ALT=\"b\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "the area is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=a%2Ab ALIGN=MIDDLE  ALT=\"A=a%2Ab\"   DISABLED_style= \"max-width:90%; height:auto;\" >.......eq.1\r<BR>\n" );
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document.write( " if the length is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10cm ALIGN=MIDDLE  ALT=\"10cm\"   DISABLED_style= \"max-width:90%; height:auto;\" > longer than its width, then\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a=b%2B10cm ALIGN=MIDDLE  ALT=\"a=b%2B10cm\"   DISABLED_style= \"max-width:90%; height:auto;\" >.........eq.2\r<BR>\n" );
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document.write( " If the area of the poster is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=1200cm%5E2 ALIGN=MIDDLE  ALT=\"A=1200cm%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, then from eq.1\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%2Ab=1200cm%5E2 ALIGN=MIDDLE  ALT=\"a%2Ab=1200cm%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >......substitute <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a ALIGN=MIDDLE  ALT=\"a\"   DISABLED_style= \"max-width:90%; height:auto;\" > from eq.2\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28b%2B10cm%29%2Ab=1200cm%5E2 ALIGN=MIDDLE  ALT=\"%28b%2B10cm%29%2Ab=1200cm%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >.....solve for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b ALIGN=MIDDLE  ALT=\"b\"   DISABLED_style= \"max-width:90%; height:auto;\" >to find the width of the poster\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b%5E2%2B10b%2Acm=1200cm%5E2 ALIGN=MIDDLE  ALT=\"b%5E2%2B10b%2Acm=1200cm%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b%5E2%2B10b%2Acm-1200cm%5E2=0 ALIGN=MIDDLE  ALT=\"b%5E2%2B10b%2Acm-1200cm%5E2=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >....use quadratic formula\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b+=+%28-10cm+%2B-+sqrt%28%2810cm%29%5E2-4%2A1%2A%28-1200cm%5E2%29+%29%29%2F%282%2A1%29+ ALIGN=MIDDLE  ALT=\"b+=+%28-10cm+%2B-+sqrt%28%2810cm%29%5E2-4%2A1%2A%28-1200cm%5E2%29+%29%29%2F%282%2A1%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b+=+%28-10cm+%2B-+sqrt%28100cm%5E2%2B4800cm%5E2+%29%29%2F2+ ALIGN=MIDDLE  ALT=\"b+=+%28-10cm+%2B-+sqrt%28100cm%5E2%2B4800cm%5E2+%29%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b+=+%28-10cm+%2B-+sqrt%28+4900cm%5E2+%29%29%2F2+ ALIGN=MIDDLE  ALT=\"b+=+%28-10cm+%2B-+sqrt%28+4900cm%5E2+%29%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b+=+%28-10cm+%2B-+70cm+%29%2F2+ ALIGN=MIDDLE  ALT=\"b+=+%28-10cm+%2B-+70cm+%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >....we need only positive solution because the width cannot be negative \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b+=+%28-10cm+%2B+70cm+%29%2F2+ ALIGN=MIDDLE  ALT=\"b+=+%28-10cm+%2B+70cm+%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b+=+60cm+%2F2+ ALIGN=MIDDLE  ALT=\"b+=+60cm+%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28b+=+30cm%29 ALIGN=MIDDLE  ALT=\"highlight%28b+=+30cm%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >....the width of the poster\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28a=40cm%29 ALIGN=MIDDLE  ALT=\"highlight%28a=40cm%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >........the length of the poster\r<BR>\n" );
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document.write( " </SPAN>\n" );
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