document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=872881>Question 872881</A>: <I><SPAN STYLE=\"word-break: break-all;\">  Please help me solve this equation: (x + 1)(x + 3)(x + 5)(x + 7) = 9 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #526492 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=526492\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (x + 1)(x + 3)(x + 5)(x + 7) = 9\r<BR>\n" );
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document.write( "(x+1)(x+7)(x+3)(x+5)=9\r<BR>\n" );
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document.write( "(x^2+8x+7)(x^2+8x+15)=9\r<BR>\n" );
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document.write( "let x^2+8x=a\r<BR>\n" );
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document.write( "(a+7)(a+15)=9\r<BR>\n" );
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document.write( "a^2+22a+105=9\r<BR>\n" );
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document.write( "a^2+22a+96=0\r<BR>\n" );
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document.write( "a^2-16x-6x+96=0\r<BR>\n" );
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document.write( "a(a-16)-6(a-16)=0\r<BR>\n" );
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document.write( "(a-16)(a-6)=0\r<BR>\n" );
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document.write( "(x^2+8x-16)(x^2+8x-6)=0<BR>\n" );
document.write( "each factor can be zero\r<BR>\n" );
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document.write( "solve both the factors by formula method you will get four vaues for x\r<BR>\n" );
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document.write( " </SPAN>\n" );
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