document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=66302>Question 66302</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the expansion of (1+x)^n; to expand: 1/(1+7x)^4, in ascending powers of x, as far as x^3 term. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #47033 by </B><A HREF=/tutors/aboutme.mpl?userid=venugopalramana><B>venugopalramana(3286)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=venugopalramana><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.geocities.com/venugopalramana/FREE_MATHS_ASSISTANCE.html valign=middle><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=47033\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the expansion of (1+x)^n; to expand: 1/(1+7x)^4, in ascending powers of x, as far as x^3 term.<BR>\n" );
document.write( "1/(1+7X)^4=(1+7X)^(-4)<BR>\n" );
document.write( "=1+[(-4)/1!](7X)+[(-4)(-5)/2!](7X)^2+[(-4)(-5)(-6)/3!](7X)^3+....<BR>\n" );
document.write( "=1-28X+490X^2-6860X^3+... </SPAN>\n" );
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