document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=803858>Question 803858</A>: <I><SPAN STYLE=\"word-break: break-all;\"> my problem is x^4-16 it says to plug in 1- the square root of 5 in my x spot.<BR>\n" );
document.write( "I do that and get a number and they say it is wrong, they want an expression like 15- 3 the square root of 5.  But i cant figure out how to get an answer like that </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #484533 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=484533\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x^4-16 it says to plug in 1- the square root of 5 in my x spot.<BR>\n" );
document.write( "------<BR>\n" );
document.write( "f(x) = x^4-16<BR>\n" );
document.write( "------<BR>\n" );
document.write( "f(1-sqrt(5)) = (1-sqrt(5))^4 - 16<BR>\n" );
document.write( "Note: That is a difference of squares.<BR>\n" );
document.write( "Factor::<BR>\n" );
document.write( "------<BR>\n" );
document.write( "= [(1-sqrt(5))^2-4)] <BR>\n" );
document.write( "------<BR>\n" );
document.write( "Square the squaring terms::<BR>\n" );
document.write( "= [1+5-2sqrt(5)-4]<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "= [2-2sqrt(5)]<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "= [2(1-sqrt(5))]<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "= 4(1-sqrt(5))(5-sqrt(5))<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "= [4(5-6sqrt(5))+5]<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "= 20-24sqrt(5) + 5<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "= 25 - 24sqrt(5)<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "==================== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );