document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=113608>Question 113608</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What values of b will make x^2 + bx + 2/5 a perfect square trinomial ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #82669 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=82669\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What values of b will make x^2 + bx + 2/5 a perfect square trinomial ?<BR>\n" );
document.write( "b = 2sqrt(2/5)<BR>\n" );
document.write( "b = (2/5)sqrt10<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "Why?<BR>\n" );
document.write( "To get the 3rd term of a perfect square trinoial you<BR>\n" );
document.write( "do the following:<BR>\n" );
document.write( "1st: Divide by 2<BR>\n" );
document.write( "2nd: Square the result<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "So to go from the 3rd term to the 2nd you have to reverse the<BR>\n" );
document.write( "procedure and use the inverse operations:<BR>\n" );
document.write( "1st: Take the square root to undo the squaring<BR>\n" );
document.write( "2nd: Multiply by 2 to undo the dividing<BR>\n" );
document.write( "--------------------------<BR>\n" );
document.write( "Hope that helps.<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );