document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=352568>Question 352568</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help with this problem. I'm supposed the simplify the equation 5(2y-z)2+4(y+2z)2. The answer I keep getting is 28y + 6z. My textbook has the answer as 24y2-4yz+21z2. How did the text book come up with this answer?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #251956 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=251956\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I'm supposed the simplify the equation 5(2y-z)^2+4(y+2z)^2. <BR>\n" );
document.write( "The answer I keep getting is 28y + 6z. <BR>\n" );
document.write( "My textbook has the answer as 24y2-4yz+21z2. <BR>\n" );
document.write( "How did the text book come up with this answer? <BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "5(2y-z)^2+4(y+2z)^2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "= 5[4y^2-4yz+z^2) + 4(y^2+4yz+4z^2)<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "= 20y^2-20yz+5z^2 + 4y^2+16yz+16z^2<BR>\n" );
document.write( "------<BR>\n" );
document.write( "= 24y^2 -4yz + 21z^2<BR>\n" );
document.write( "=========================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
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