document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=935353>Question 935353</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do you: \r<BR>\n" );
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document.write( "Find the coefficient of x^4 in the binomial expansion of (5+2x)^7\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #568555 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=568555\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How do you: <BR>\n" );
document.write( "Find the coefficient of x^4 in the binomial expansion of (5+2x)^7 = (2x+5)^7 <BR>\n" );
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document.write( "x^4 appears in the 4th term<BR>\n" );
document.write( "Form of the 4th term:: 7C4(2x)^4*5^3<BR>\n" );
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document.write( "Coefficient:: 7C4 = 35<BR>\n" );
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document.write( "Expansion of 1st term:: (2x)^4 = 16x^4<BR>\n" );
document.write( "Expansion of 2nd term:: (5)^3 = 125<BR>\n" );
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document.write( "4th term:: 35*16x^4*125 = 70,000x^4<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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