document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=819739>Question 819739</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello, the problem I need help on is this polynomial which I have to factor completely: a^6-81b^2\r<BR>\n" );
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document.write( "After working on the problem, I got this answer: (a^2+9b)(a^3-9b)\r<BR>\n" );
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document.write( "But, the Worksheet I have says the answer is (a^3+9b)(a^3-9b). Can someone please explain? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #493292 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=493292\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> polynomial which I have to factor completely: a^6-81b^2<BR>\n" );
document.write( "After working on the problem, I got this answer: (a^2+9b)(a^3-9b)<BR>\n" );
document.write( "But, the Worksheet I have says the answer is (a^3+9b)(a^3-9b).<BR>\n" );
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document.write( "I assume you recognized this as the \"difference of squares,<BR>\n" );
document.write( "Multiplying like terms you add the exponents, a^3 * a^3 = a^6<BR>\n" );
document.write( "a^2 *a^3 = a^5 </SPAN>\n" );
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