document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=42804>Question 42804</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (a). write the value of the discriminant of each equation. (b). Then use it to decide how many different real number roots the equation has.(do not solve.)\r<BR>\n" );
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document.write( "x to the second power = 2x - 1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #27867 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=27867\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For x^2 = 2x - 1 we have<BR>\n" );
document.write( "x^2 - 2x + 1 = 0 and the disciminant equals<BR>\n" );
document.write( "4 - 4 = 0<BR>\n" );
document.write( "meaning you will have one rational double root.<BR>\n" );
document.write( "Of course it is a perfect square trinomial... </SPAN>\n" );
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