document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=31919>Question 31919</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0321279085/algebrahomeworkh>college algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> 1)	Using the quadratic equation x2 - 4x - 5 = 0, perform the following tasks:\r<BR>\n" );
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document.write( "a)	Solve by factoring.\r<BR>\n" );
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document.write( "b)	Solve by completing the square.\r<BR>\n" );
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document.write( "c)      Solve by using the quadratic formula. <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 #18488 by </B><A HREF=/tutors/aboutme.mpl?userid=mukhopadhyay><B>mukhopadhyay(490)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mukhopadhyay><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=18488\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x^2-4x-5=0<BR>\n" );
document.write( "Using (a): x^2-5x+x-5=0<BR>\n" );
document.write( "=>x(x-5)+1(x-5)=0<BR>\n" );
document.write( "=>(x-5)(x+1)=0<BR>\n" );
document.write( "=>x=5 or x=-1;<BR>\n" );
document.write( "Using (b): x^2-4x-5=0<BR>\n" );
document.write( "=>(x^2-4x)=5<BR>\n" );
document.write( "=>[x^2-4x+(4/2)^2-(4/2)^2]=5<BR>\n" );
document.write( "=>(x-2)^2=5+4<BR>\n" );
document.write( "=>(x-2)^2=9<BR>\n" );
document.write( "=>(x-2)=3 or (x-2)=-3<BR>\n" );
document.write( "=>x=5 or x=-1;<BR>\n" );
document.write( "Using (c): x^2-4x-5=0<BR>\n" );
document.write( "The roots are [(-b)+/-sqrt(b^2-4ac)]/2a<BR>\n" );
document.write( "a=1, b=-4, and c=-5<BR>\n" );
document.write( "Substitute the value of a,b,and c to get the roots using quadratic formula<BR>\n" );
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