document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=320030>Question 320030</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Explain why the equation x^2 = 4 has two real number solutions, while the equation the square root of x = 2 has only one real number solution. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #229174 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=229174\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Explain why the equation x^2 = 4 has two real number solutions, while the equation the square root of x = 2 has only one real number solution.<BR>\n" );
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document.write( "Solve x^2 = 4<BR>\n" );
document.write( "x^2-4 = 0<BR>\n" );
document.write( "Factor:<BR>\n" );
document.write( "(x-2)(x+2) = 0<BR>\n" );
document.write( "x = 2 or x = -2<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "Solve sqrt(x) = 2<BR>\n" );
document.write( "Square both sides to get:<BR>\n" );
document.write( "x = 4<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );