document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=710575>Question 710575</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this equation: \r<BR>\n" );
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document.write( "Given the sum of a and a3 = 3<BR>\n" );
document.write( "and the sum of a4 and a6 = 81.\r<BR>\n" );
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document.write( "1) find the common ratio, r\r<BR>\n" );
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document.write( "p/s: This is what I've done. But then, I'm stuck.\r<BR>\n" );
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document.write( "= a+ar^3-1=3<BR>\n" );
document.write( "= a+ar^2=3<BR>\n" );
document.write( "= a(1+r^2)=3 << FACTORIZE.\r<BR>\n" );
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document.write( "= ar^4-1+ar^6-1=81<BR>\n" );
document.write( "= ar^3+ar^5=81<BR>\n" );
document.write( "= ar^3 (1+r^2)=81 << FACTORIZE.\r<BR>\n" );
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document.write( "then, what should I do? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #437106 by </B><A HREF=/tutors/aboutme.mpl?userid=lynnlo><B>lynnlo(4176)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lynnlo><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=437106\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A+AR^3-1=3<BR>\n" );
document.write( "MOVE THE -3 TO THE LEFT<BR>\n" );
document.write( "A+AR^3-1-3=0<BR>\n" );
document.write( "ADD FRACTIONS OR YOUR INTEGERS TOGETHER<BR>\n" );
document.write( "A+AR^3+-4=0<BR>\n" );
document.write( "REMOVE THE PLUS SIGN(+) IN FRONT OF THE -4<BR>\n" );
document.write( "A+AR^3-4=0<BR>\n" );
document.write( "R=3&#8730;4/A-1 </SPAN>\n" );
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