document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=215884>Question 215884</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If f(x)=2x+5/x-a and f(0)=-1,what is the value of a. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #163105 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=163105\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If f(x)=2x+5/x-a and f(0)=-1,what is the value of a.<BR>\n" );
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document.write( "a = 5<BR>\n" );
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document.write( "here's how.<BR>\n" );
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document.write( "(2*(0) + 5) / (0-a) = -1<BR>\n" );
document.write( "This reduces to:<BR>\n" );
document.write( "5 / (-a) = (-1)<BR>\n" );
document.write( "Multiply both sides by (-a) to getg:<BR>\n" );
document.write( "5 = (-1) * (-a)<BR>\n" );
document.write( "This simplifies to:<BR>\n" );
document.write( "5 = a<BR>\n" );
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document.write( "Substitute in original equation of:<BR>\n" );
document.write( "(2*(0) + 5) / (0-a) = -1 to get:<BR>\n" );
document.write( "(2*(0) + 5) / (0-5) = -1 which becomes:<BR>\n" );
document.write( "(5) / (-5) = (-1) which becomes:<BR>\n" );
document.write( "(-1) = (-1) confirming that a = 5 is a good value.<BR>\n" );
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