document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=30461>Question 30461</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (8) Question:<BR>\n" );
document.write( "Solve the system:<BR>\n" );
document.write( "x^2 +y^2=20<BR>\n" );
document.write( "x^2-2y^2=8<BR>\n" );
document.write( "(THIS PROBLEM IS WRITTEN EXACTLY AS IT APPEARS!)\r<BR>\n" );
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document.write( "(A) (1, sqrt19) (1, -sqrt19) (-1, sqrt19), (-1, -sqrt19)<BR>\n" );
document.write( "(B)(4,2) (4, -2)<BR>\n" );
document.write( "(C) 04, 2) (-4, -2)<BR>\n" );
document.write( "(D) 4, 2) (4, -2) (-4, 2) (-4, -2)\r<BR>\n" );
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document.write( "Please be specific as to which letter answer is correct<BR>\n" );
document.write( "Thanks  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #17101 by </B><A HREF=/tutors/aboutme.mpl?userid=mukhopadhyay><B>mukhopadhyay(490)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mukhopadhyay><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=17101\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x^2 +y^2=20 => y^2=20-x^2\r<BR>\n" );
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document.write( "x^2-2y^2=8 => x^2 -2(20-x^2)=8 => 3x^2=48 => x^2=16 => x= 4 or x= -4\r<BR>\n" );
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document.write( "y^2=20-x^2<BR>\n" );
document.write( "=>y^2=20-16 => y^2=4 => y=2 or y=-2\r<BR>\n" );
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document.write( "Correct answer is D\r<BR>\n" );
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