document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=30148>Question 30148</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Question:<BR>\n" );
document.write( "Solve the system: x^2+y^2=4<BR>\n" );
document.write( "                  x+y=2\r<BR>\n" );
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document.write( "Possible solutions:<BR>\n" );
document.write( "(a) [{2,-2), (-2,-2)]<BR>\n" );
document.write( "(b) [{0,-2), (-2,0)]<BR>\n" );
document.write( "(c) [(0,2), (2,0)]<BR>\n" );
document.write( "(d) [(0,0), (2,-2)]\r<BR>\n" );
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document.write( "Please help thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #16860 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=16860\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x^2+y^2=4<BR>\n" );
document.write( "x+y=2<BR>\n" );
document.write( "(c) looks like the answer<BR>\n" );
document.write( "x + y = 2<BR>\n" );
document.write( "y = 2 - x<BR>\n" );
document.write( "x^2 + (2 - x)^2 = 4<BR>\n" );
document.write( "x^2 + 4 -4x + x^2 = 4<BR>\n" );
document.write( "2x^2 -4x = 0<BR>\n" );
document.write( "x^2 -2x = 0<BR>\n" );
document.write( "x(x - 2) = 0<BR>\n" );
document.write( "this is true when x = 0 or x = 2<BR>\n" );
document.write( "when x = 0,<BR>\n" );
document.write( "x + y = 2<BR>\n" );
document.write( "0 + y = 2<BR>\n" );
document.write( "y = 2<BR>\n" );
document.write( "(0, 2) is a solution<BR>\n" );
document.write( "when x = 2,<BR>\n" );
document.write( "x + y = 2<BR>\n" );
document.write( "2 + y = 2<BR>\n" );
document.write( "y = 0<BR>\n" );
document.write( "(2, 0) is a solution<BR>\n" );
document.write( "answer is (c) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );