document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=68715>Question 68715</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0812387511/algebrahomeworkh>Algebra 1 An Integrated Approach</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> y=x^2-4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #48937 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=48937\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y=x^2-4<BR>\n" );
document.write( "y=(x+2)(x-2) [factor]<BR>\n" );
document.write( "0=x+2 [set each factor equal to zero and solve for x]<BR>\n" );
document.write( "x=-2<BR>\n" );
document.write( "or<BR>\n" );
document.write( "0=x-2<BR>\n" );
document.write( "x=2<BR>\n" );
document.write( ".<BR>\n" );
document.write( "check by plugging either +2 or -2 back into the original equation. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );