document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=325769>Question 325769</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am taking and online algebra II class and I do not understand how to solve this equation (y^2-9)(9y^2-9y+8) the instructions saty multiply. Would I use the foil method? <BR>\n" );
document.write( "This is what I came up with<BR>\n" );
document.write( "(y^2-9)(9y^2-9y+8)<BR>\n" );
document.write( "Y^2*9y^2=9y^4<BR>\n" );
document.write( "y^2*-9y=-9y^3<BR>\n" );
document.write( "y^2*8=8y^2<BR>\n" );
document.write( "-9*9y^2=-81y^2<BR>\n" );
document.write( "-9*-9y=81y^2<BR>\n" );
document.write( "-9*8=72<BR>\n" );
document.write( "9y^4-9y^3+8y-81y^2+81y^2-72<BR>\n" );
document.write( "9y^4-9y^3+8y-y^2-72<BR>\n" );
document.write( "Is this correct? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #233212 by </B><A HREF=/tutors/aboutme.mpl?userid=nyc_function><B>nyc_function(2741)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nyc_function><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=nyc_function><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=233212\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First of all, there is no equation here.  You cannot have an equation without the EQUAL sign. Secondly, you must multiply every member of (y^2-9) by every member of(9y^2-9y+8).  Afterwards, simplify by combining like terms.  Thirdly, the first-two terms are correct.  The last term is correct but terms 3 and 4 in your answer are not right.  \r<BR>\n" );
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document.write( "Let's do it term by term.\r<BR>\n" );
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document.write( "y^2 * 9y^2 = 9y^4\r<BR>\n" );
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document.write( "y^2 * -9y = -9y^3\r<BR>\n" );
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document.write( "y^2 * 8 = 8y^2\r<BR>\n" );
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document.write( "I have completed the multiplication for the y^2 term.\r<BR>\n" );
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document.write( "-9 * 9y^2 = -81y^2\r<BR>\n" );
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document.write( "-9 * -9y = 81y\r<BR>\n" );
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document.write( "-9 * 8 = -72\r<BR>\n" );
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document.write( "I have completed the multiplication for the -9 term.\r<BR>\n" );
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document.write( "We now have the following:\r<BR>\n" );
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document.write( "9y^4 - 9y^3 + 8y^2 - 81y^2 + 81y - 72 =\r<BR>\n" );
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document.write( "We now combine like terms and that's it.\r<BR>\n" );
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document.write( "9y^4 - 9y^3 -73y^2 + 81y - 72\r<BR>\n" );
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document.write( "Did you follow?\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );