document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=230313>Question 230313</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the quadratic formula to determine the x-intercepts (if any) of the following function.  Then evaluate the function for several values of x, and us the resulting points to graph the function.  \r<BR>\n" );
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document.write( "Q:  f(x) = x^2 4x+4\r<BR>\n" );
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document.write( "Please help me, I am so lost and I have been working on this for over an hour... </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #170528 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=170528\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Q: f(x) = x^2+4x+4 <BR>\n" );
document.write( "Quadratic with a = 1 ; b = 4 ; c = 4<BR>\n" );
document.write( "Quadratic Formula: x = [-b +- sqrt(b^2-4ac)]/(2a)<BR>\n" );
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document.write( "Use the quadratic formula to determine the x-intercepts (if any) of the following function.<BR>\n" );
document.write( "x = [-4 +- sqrt(16 - 4*1*4)]/(2)<BR>\n" );
document.write( "x = [-4 +-sqrt(0)]/2<BR>\n" );
document.write( "x = -2 + 0 or x = -2 - 0<BR>\n" );
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document.write( "The x-intercept is x = -2<BR>\n" );
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document.write( "Then evaluate the function for several values of x, and use the resulting points to graph the function.<BR>\n" );
document.write( "If x = -5, y = (-5)^2+4*-5+4 = 25-20+4 = 9<BR>\n" );
document.write( "If x = -3, y = (-3)^2+4*-3+4 = 1<BR>\n" );
document.write( "If x = 0, y = (0)^2+4*0 + 4 = 4<BR>\n" );
document.write( "If x = 2, y = (2)^2 + 4*2 + 4 = 16<BR>\n" );
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document.write( "Plot the points: (-5,9)(-3,1)(0,4)(2/16) and draw a smooth <BR>\n" );
document.write( "curve thru them:<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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