document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=68067>Question 68067</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0395977223/algebrahomeworkh>Algebra Structure and Method</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Please factor the expression as a difference of squares:\r<BR>\n" );
document.write( "\n" );
document.write( "4(x+y)^2-(2y-z)^2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #48363 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=48363\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Please factor the expression as a difference of squares: <BR>\n" );
document.write( "4(x+y)^2-(2y-z)^2<BR>\n" );
document.write( "--------------------------<BR>\n" );
document.write( "Each term is a perfect square so it factors as follows:<BR>\n" );
document.write( "a^2-b^2=(a-b)(a+b)<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "So with your problem you get:<BR>\n" );
document.write( "(2(x+y)-(2y-z))(2(x+y)+(2y-z))<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );