document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=248478>Question 248478</A>: <I><SPAN STYLE=\"word-break: break-all;\"> use the difference of two squares theorem to find all of the solutions to the following equations: z^2=7 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #181086 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=181086\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What does the \"difference of two squares\" look like.<BR>\n" );
document.write( "a^2-b^2<BR>\n" );
document.write( "Let's make this equation look like that.<BR>\n" );
document.write( "z^2=7<BR>\n" );
document.write( "subtract 7 from both sides<BR>\n" );
document.write( "z^2-7=0<BR>\n" );
document.write( "now apply the theorem<BR>\n" );
document.write( "(z-sqrt7)(z+sqrt7)=0<BR>\n" );
document.write( "z=sqrt7<BR>\n" );
document.write( "z=-sqrt7<BR>\n" );
document.write( "http://www.themathpage.com/Alg/difference-two-squares.htm </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );