document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=578376>Question 578376</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have a algebra problem that, I need help solving. Can you please help me.\r<BR>\n" );
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document.write( "sqrt (x+20) -x=0\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 #370629 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=370629\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> sqrt (x+20) -x=0 <BR>\n" );
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document.write( "sqrt(x+20) = x<BR>\n" );
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document.write( "Square both sides:<BR>\n" );
document.write( "x+20 = x^2<BR>\n" );
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document.write( "Rearrange:<BR>\n" );
document.write( "x^2 -x - 20 = 0<BR>\n" );
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document.write( "Factor:<BR>\n" );
document.write( "(x-5)(x+4) = 0<BR>\n" );
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document.write( "x = 5 or x = -4<BR>\n" );
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document.write( "Check:<BR>\n" );
document.write( "Can x = 5 ?<BR>\n" );
document.write( "sqrt(5+20)-5 = 0<BR>\n" );
document.write( "5 - 5 = 0<BR>\n" );
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document.write( "Can x = -4 ?<BR>\n" );
document.write( "sqrt(-4+20)-(-4) = 0<BR>\n" );
document.write( "sqrt(16) + 4 = 0<BR>\n" );
document.write( "4 + 4 = 0<BR>\n" );
document.write( "False<BR>\n" );
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document.write( "Only solution : x = 5<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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