document.write( "Question 143055: Find two real numbers that have a sum of 8 and a product of 2. \n" ); document.write( "

Algebra.Com's Answer #104099 by checkley77(12844) $\"\"$ $\"About$

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x+y=8 or x=8-y
\n" ); document.write( "x*y=2
\n" ); document.write( "(8-y)*y=2
\n" ); document.write( "8y-y^2=2
\n" ); document.write( "-y^2+8y-2=0
\n" ); document.write( "y^2-8y+2=0
\n" ); document.write( " $\"y+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$
\n" ); document.write( "y=(8+-sqrt[-8^2-4*1*2])/2*1
\n" ); document.write( "y=(8+-sqrt[64-8])/2
\n" ); document.write( "y=(8+-sqrt56)/2
\n" ); document.write( "y=(8+-7.48)/2
\n" ); document.write( "y=15.48/2
\n" ); document.write( "y=7.74 answer.
\n" ); document.write( "y=(8-7.48)/2
\n" ); document.write( "y=.52/2
\n" ); document.write( "y=.26 answer.
\n" ); document.write( "proof:
\n" ); document.write( "7.74+.26=8
\n" ); document.write( "8=8
\n" ); document.write( "7.74*.26=2
\n" ); document.write( "2~2
\n" ); document.write( " \n" ); document.write( "

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