document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=164733>Question 164733</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Factor 10x^2-21x-10 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #121396 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=121396\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 10x^2-21x-10<BR>\n" );
document.write( "10*-10=-100. What 2 factors of -100 have a sum of -21? Ans -25 and 4.<BR>\n" );
document.write( "10x^2+4x-25x-10<BR>\n" );
document.write( "=2x(5x+2)-5(5x+2)<BR>\n" );
document.write( "=(2x-5)(5x+2)<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
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