document.write( "Question 1061575: Please help me solve this using the addition method. Thank you!\r
\n" ); document.write( "\n" ); document.write( "\"+x%5E2%2By%5E2=17+\"\r
\n" ); document.write( "\n" ); document.write( "\"+x%5E2-2y%5E2=-31+\"
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Algebra.Com's Answer #676337 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Subtract eq. 2 from eq. 1,
\n" ); document.write( "\"x%5E2%2By%5E2-x%5E2%2B2y%5E2=17-%28-31%29\"
\n" ); document.write( "\"3y%5E2=48\"
\n" ); document.write( "\"y%5E2=16\"
\n" ); document.write( "\"y=4\" and \"y=-4\"
\n" ); document.write( "So then,
\n" ); document.write( "\"x%5E2%2B16=17\"
\n" ); document.write( "\"x%5E2=1\"
\n" ); document.write( "\"x=1\" and \"x=-1\"
\n" ); document.write( "(-1,4)
\n" ); document.write( "(-1,-4)
\n" ); document.write( "(1,4)
\n" ); document.write( "(1,-4)
\n" ); document.write( "
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