document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=823171>Question 823171</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1. x^2+y^2=16         y=-x^2-4 \r<BR>\n" );
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document.write( " 2. x^2-y^2=61        x^2-y^2=11 \r<BR>\n" );
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document.write( "The directions are solve the system of liner or non-linear equations but im not sure how  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #495309 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=495309\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1. x^2+y^2=16 y=-x^2-4<BR>\n" );
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document.write( "x^2 = y-4<BR>\n" );
document.write( "Substitute for \"x^2\" and solve for \"y\":<BR>\n" );
document.write( "y-4 + y^2 = 16<BR>\n" );
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document.write( "y^2 + y - 20 = 0<BR>\n" );
document.write( "Factor:<BR>\n" );
document.write( "(y+5)(y-4) = 0<BR>\n" );
document.write( "y = -5 or y = 4<BR>\n" );
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document.write( "Solve for \"x\":<BR>\n" );
document.write( "x^2 = y-4<BR>\n" );
document.write( "If y = -5, x^2 = -9 <BR>\n" );
document.write( "Therefore y = -5 is extraneous.<BR>\n" );
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document.write( "If y = 4, x^2 = 4-4 = 0<BR>\n" );
document.write( "Then x = 0<BR>\n" );
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document.write( "Solution:: (0,4)<BR>\n" );
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document.write( "2. <BR>\n" );
document.write( "x^2-y^2=61 <BR>\n" );
document.write( "x^2-y^2=11<BR>\n" );
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document.write( "Subtract to get:<BR>\n" );
document.write( "0 = 50<BR>\n" );
document.write( "That is a contradiction.<BR>\n" );
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document.write( "There are no solutions.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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