document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=76285>Question 76285</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please show me how to solve the equation using the Zero-factor property.  Thanks!\r<BR>\n" );
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document.write( "X^2+4x-21=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #54738 by </B><A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><B>tutorcecilia(2152)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><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=tutorcecilia><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=54738\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> X^2+4x-21=0 <BR>\n" );
document.write( "(x+7)(x-3)=0 [factor]<BR>\n" );
document.write( "x+7=0 [set each factor equal to zero and solve]<BR>\n" );
document.write( "x=-7<BR>\n" );
document.write( "and<BR>\n" );
document.write( "x-3=0<BR>\n" );
document.write( "x=3<BR>\n" );
document.write( ".<BR>\n" );
document.write( "check by plugging in each value for x and solve.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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