document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1168460>Question 1168460</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What should be the value of k in 2x^4-5x^2+k so that x-5 is a zero?\r<BR>\n" );
document.write( "\n" );
document.write( "I kinda don't know how to solve this one may I please ask for your assistance, I would be very happy if you could help me out  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #793033 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=793033\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if x - 5 is a zero, then solve for x to get = 5<BR>\n" );
document.write( "set the equation equal to 0 and replace x with 5 in the equation to get:\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "2x^4 - 5x^2 + k = 0 becomes:\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "2*5^4 - 5*5^2 + k = 0 which becomes:\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "1125 + k = 0\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "solve for k to get:\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "k = -1125\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "the equation becomes 2x^4 - 5x^2 - 1125 = y\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "when you replace x with 5, you get y = 0.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "the graph of this equation looks like this.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" src = \"http://theo.x10hosting.com/2020/102805.jpg\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "it actually has 2 zeroes, one at x = -5 and one at x = 5.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "it actually has 4 roots, except that 2 of them aren't real and so don't show up on the graph.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "the 2 roots that are real are the zeroes. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );