document.write( "Question 81474: What two integers have a product of 64 and a sum of -20? \n" ); document.write( "

Algebra.Com's Answer #58458 by checkley75(3666) $\"\"$ $\"About$

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X+Y=-20 X=-20-Y &
\n" ); document.write( "X*Y=64.
\n" ); document.write( "NOW SUBSTITUTE (-20-Y) FOR X IN THE SECOND EQUATION & SOLVE FOR Y
\n" ); document.write( "(-20-Y)*Y=64
\n" ); document.write( "-20Y-Y^2=64
\n" ); document.write( "Y^2+20Y+64=0
\n" ); document.write( "(Y+16)(Y+4)=0
\n" ); document.write( "Y=16=0
\n" ); document.write( "Y=-16 ANSWER. THEN X=-4
\n" ); document.write( "Y+4=0
\n" ); document.write( "Y=-4 ANSWER. THEN X=-16
\n" ); document.write( "PROOF
\n" ); document.write( "-16-4=-20
\n" ); document.write( "-20=-20 &
\n" ); document.write( "-4*-16=64
\n" ); document.write( "64=64 \n" ); document.write( "

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