document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1035082>Question 1035082</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need some help on this one,\r<BR>\n" );
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document.write( "if f(x)=x^2-81 and g(x)=(x-9)^(-1)(x+9) , find g(x) x f(x) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #649701 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=649701\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x^2 - 81 = (x+9) * (x-9)\r<BR>\n" );
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document.write( "(x-9)^(-1) * (x+9) = 1/(x-9) * (x+9) = (x+9) / (x-9)\r<BR>\n" );
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document.write( "x+9) * (x-9) * (x+9) / (x-9) = (x+9) * (x+9) = (x+9)^2.\r<BR>\n" );
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document.write( "(x+9)^2 = x^2 + 9x + 9x + 81 = x^2 + 18x + 81.\r<BR>\n" );
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document.write( "how to you know it's good?<BR>\n" );
document.write( "use your calculator to evaluate both the original expression and the final expression using a randomly selected value of x.\r<BR>\n" );
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document.write( "i used x = 22 (just a number taken off the top of my head).\r<BR>\n" );
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document.write( "the display of my calculations of the original expression and the final expression are shown below.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" src = \"http://theo.x10hosting.com/2016/051901.jpg\" alt=\"$$$\" </>\r<BR>\n" );
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document.write( "i also calculated x^2 + 18x + 81 using 22 for x and got 22^2 + 18*22 + 81 = 961.\r<BR>\n" );
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document.write( "the solution looks good if i understood your problem correctly.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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