document.write( "Question 985321: x + root Y = 11,
\n" ); document.write( "root x + y = 7\r
\n" ); document.write( "\n" ); document.write( "Find the value of x & y. \n" ); document.write( "

Algebra.Com's Answer #606193 by Alan3354(69443) $\"\"$ $\"About$

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x + root Y = 11,
\n" ); document.write( "root x + y = 7\r
\n" ); document.write( "\n" ); document.write( "Find the value of x & y.
\n" ); document.write( "------------
\n" ); document.write( "Assuming you mean square root:
\n" ); document.write( " $\"sqrt%28x%29+%2B+y+=+7\"$
\n" ); document.write( " $\"sqrt%28x%29+=+7+-+y\"$
\n" ); document.write( " $\"x+=+y%5E2+-+14y+%2B+49\"$
\n" ); document.write( "Sub for x in the 1st eqn.
\n" ); document.write( " $\"y%5E2+-+14y+%2B+49+%2B+sqrt%28y%29+=+11\"$
\n" ); document.write( " $\"y%5E2+-+14y+%2B+38+=+-sqrt%28y%29\"$
\n" ); document.write( " $\"y%5E4+-+28y%5E3+%2B+272y%5E2+-+1065y+%2B+1444+=+0\"$
\n" ); document.write( "By graphical methods:
\n" ); document.write( "y = 4 is the only integer --> x = 9
\n" ); document.write( "-------------
\n" ); document.write( "There are 3 other values that can be found by various methods.
\n" ); document.write( "Is 1 sufficient? \n" ); document.write( "

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