document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1106995>Question 1106995</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The sum of four numbers in arithmetic progression is 16. The square of the last number is the square of the first number plus 48. What are the four numbers? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #722002 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=722002\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If x is first term, and d the common difference, the sum to 16, when simplifed gives <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x%2B3d=8 ALIGN=MIDDLE  ALT=\"2x%2B3d=8\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "Squares-description gives  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2B3d%29%5E2=x%5E2%2B48 ALIGN=MIDDLE  ALT=\"%28x%2B3d%29%5E2=x%5E2%2B48\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "Solve the system for d and x.<BR>\n" );
document.write( "Substituting for 3d,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2B8-2x%29%5E2=x%5E2%2B48 ALIGN=MIDDLE  ALT=\"%28x%2B8-2x%29%5E2=x%5E2%2B48\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%288-x%29%5E2=x%5E2%2B48 ALIGN=MIDDLE  ALT=\"%288-x%29%5E2=x%5E2%2B48\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( ".\r<BR>\n" );
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document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x=1%29 ALIGN=MIDDLE  ALT=\"highlight%28x=1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, the FIRST term of the progression.\r<BR>\n" );
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document.write( "Returning to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3d=8-2x ALIGN=MIDDLE  ALT=\"3d=8-2x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3d=8-2%2A1=6 ALIGN=MIDDLE  ALT=\"3d=8-2%2A1=6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3d=6 ALIGN=MIDDLE  ALT=\"3d=6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28d=2%29 ALIGN=MIDDLE  ALT=\"highlight%28d=2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, common difference between successive terms.\r<BR>\n" );
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document.write( ".\r<BR>\n" );
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document.write( "<PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">1,  3,  5,  7</PRE> </SPAN>\n" );
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