document.write( "Question 874383: X^2+y^2=10
\n" ); document.write( "X+3y=10 \n" ); document.write( "

Algebra.Com's Answer #527470 by mananth(16946) $\"\"$ $\"About$

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X^2+y^2=10
\n" ); document.write( "X+3y=10\r
\n" ); document.write( "\n" ); document.write( "x=10-3y\r
\n" ); document.write( "\n" ); document.write( "substitute\r
\n" ); document.write( "\n" ); document.write( " $\"%2810-3y%29%5E2%2By%5E2+=10\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"100-60y%2B9y%5E2%2By%5E2=10\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"10y%5E2-60y%2B90=0\"$ \r
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\n" ); document.write( "\n" ); document.write( "/10\r
\n" ); document.write( "\n" ); document.write( "y^2-6y+9=0\r
\n" ); document.write( "\n" ); document.write( "y^2-3y-3y+9=0\r
\n" ); document.write( "\n" ); document.write( "y(y-3)-3(y-3)=0\r
\n" ); document.write( "\n" ); document.write( "(y-3)^2=0
\n" ); document.write( "y-3=0
\n" ); document.write( "y=3 \n" ); document.write( "

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