document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=166736>Question 166736</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Determine the constant that should be added to the binomial so that it becomes a perfect square trinomial. Then write and factor the trinomial.<BR>\n" );
document.write( "x^2 - 4x\r<BR>\n" );
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document.write( "a. 16; x^2 - 4x + 16 = (x - 4)^2<BR>\n" );
document.write( "b.  -4; x^2 - 4x - 4 = (x - 2)^2<BR>\n" );
document.write( "c. -16; x^2 - 4x - 16 = (x - 4)^2<BR>\n" );
document.write( "d. 4; x^2 - 4x + 4 = (x - 2)^2<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #126708 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=126708\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Divide the coefficient on the x term by 2 and then square the result. </SPAN>\n" );
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