document.write( "Question 192002: Find the solutions by using substitution method.\r
\n" ); document.write( "\n" ); document.write( "y squared= x squared - 32
\n" ); document.write( "x squared+ y squared = 40 \n" ); document.write( "

Algebra.Com's Answer #144067 by Alan3354(69443) $\"\"$ $\"About$

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Find the solutions by using substitution method.
\n" ); document.write( "y squared= x squared - 32
\n" ); document.write( "x squared+ y squared = 40
\n" ); document.write( "------------------
\n" ); document.write( " $\"y%5E2+=+x%5E2+-+32\"$
\n" ); document.write( " $\"x%5E2+%2B+y%5E2+=+40\"$
\n" ); document.write( "Sub for y^2 into the 2nd eqn
\n" ); document.write( " $\"x%5E2+%2B+x%5E2-32+=+40\"$
\n" ); document.write( " $\"2x%5E2+=+72\"$
\n" ); document.write( " $\"x%5E2+=+36\"$
\n" ); document.write( "x = +6
\n" ); document.write( "x = -6
\n" ); document.write( "-------------
\n" ); document.write( " $\"y%5E2+=+x%5E2+-+32\"$
\n" ); document.write( " $\"y%5E2+=+36-32\"$
\n" ); document.write( "y = +2
\n" ); document.write( "y = -2\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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