document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=464407>Question 464407</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve for x\r<BR>\n" );
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document.write( "24 - (x^2/20) = 16\r<BR>\n" );
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document.write( "I started by multiplying both sides of the equation by 20\r<BR>\n" );
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document.write( "480 - x^2 = 320\r<BR>\n" );
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document.write( "x^2 = 160<BR>\n" );
document.write( "x=4 rad 10<BR>\n" );
document.write( "Is that correct? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #318208 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=318208\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Yes, that's correct. However there are two solutions for x, not just one.\r<BR>\n" );
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document.write( "When you have <IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE x^2 = 160\">, taking the square root of both sides will result in <IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE x = 4\sqrt{10}\">.  However, x can also be equal to <IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?-4\sqrt{10}\"> (the negative solution). This is a common place to mess up. For square roots it is pretty easy to compensate; just put a +/- sign in front. When you have cube or fourth roots and you want to find all such roots you will have to use complex numbers. </SPAN>\n" );
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