document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=190849>Question 190849</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 20^2+x^2=(2x)^2\r<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 #143331 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley75><B>checkley75(3666)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley75><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=143331\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 20^2+x^2=(2x)^2<BR>\n" );
document.write( "400+x^2=4x^2<BR>\n" );
document.write( "x^2-4x^2=-400<BR>\n" );
document.write( "-3x^2=-400<BR>\n" );
document.write( "x^2=-400/-3<BR>\n" );
document.write( "x^2=133.3<BR>\n" );
document.write( "x=sqrt133.3<BR>\n" );
document.write( "x=11.547 ans.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "20^2+11.547^2=(2*11.547)^2<BR>\n" );
document.write( "400+133.3=23.094^2<BR>\n" );
document.write( "533.3=533.3<BR>\n" );
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