document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=78109>Question 78109</A>: <I><SPAN STYLE=\"word-break: break-all;\"> d...ex\r<BR>\n" );
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document.write( "Problem #15\r<BR>\n" );
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document.write( "Find the constant term that should be added to make the following expression a perfect square trinomial.\r<BR>\n" );
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document.write( "x^2+7x\r<BR>\n" );
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document.write( "Problem #22<BR>\n" );
document.write( "Solve by using the quadratic formula<BR>\n" );
document.write( "5x^2-4x+1=0\r<BR>\n" );
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document.write( "Problem #23\r<BR>\n" );
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document.write( "Solve by completing the square.<BR>\n" );
document.write( "4x^2+2x-3=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #56087 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=56087\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the constant term that should be added to make the following expression a perfect square trinomial. <BR>\n" );
document.write( "x^2+7x+(7/2)^2<BR>\n" );
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document.write( "Problem #22<BR>\n" );
document.write( "Solve by using the quadratic formula<BR>\n" );
document.write( "5x^2-4x+1=0 <BR>\n" );
document.write( "x=[4+-sqrt(4^2-4*5*1)]/10<BR>\n" );
document.write( "x=[4+-sqrt(-4)]/10<BR>\n" );
document.write( "x=[4+-2i]/10<BR>\n" );
document.write( "x=(2/5)+(1/5)i or x=(2/5)-(1/5)i<BR>\n" );
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document.write( "Problem #23 <BR>\n" );
document.write( "Solve by completing the square.<BR>\n" );
document.write( "4x^2+2x-3=0<BR>\n" );
document.write( "4(x^2+(1/2)x-(3/4)=0<BR>\n" );
document.write( "Divide both sides by 4 to gt:<BR>\n" );
document.write( "x^2+(1/2)x+?  = (3/4)+?<BR>\n" );
document.write( "Complete the square:<BR>\n" );
document.write( "x^2+(1/2)x+(1/4)^2 = (3/4)+(1/4)^2<BR>\n" );
document.write( "Factor to get:<BR>\n" );
document.write( "(x+(1/4))^2 = (13/16)<BR>\n" );
document.write( "Take the square root to get:<BR>\n" );
document.write( "(x+(1/4)) =+- (1/4)sqrt(13)<BR>\n" );
document.write( "x=(1/4)+(1/4)sqrt(13) or x= (1/4)-(1/4)sqrt13<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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