document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=28228>Question 28228</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find a value for k so that 9m^2-kn^2 will have the factors 3m+7n and 3m-7n.\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 #15973 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=15973\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find a value for k so that 9m^2-kn^2 will have the factors 3m+7n and 3m-7n.\r<BR>\n" );
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document.write( " (3m+7n)*(3m-7n)= (3M)^2- (7N)^2 = 9M^2-49N^2<BR>\n" );
document.write( "COMPARING WITH 9m^2-kn^2...WE GET K=49<BR>\n" );
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