document.write( "Question 913307: what adds to make -11 and times to make positive 10 \n" ); document.write( "

Algebra.Com's Answer #554462 by JoelSchwartz(130) $\"\"$ $\"About$

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\n" ); document.write( "x+y=-11
\n" ); document.write( "xy=10
\n" ); document.write( "y(-11-y)=10
\n" ); document.write( "-11y-y^2=10
\n" ); document.write( "-y^2-11y-10=0
\n" ); document.write( "ac=10
\n" ); document.write( "(y+10)(-y-1)=0
\n" ); document.write( "y=-10 and y =-1
\n" ); document.write( "-10-1=-11
\n" ); document.write( "-10*-1=10 \n" ); document.write( "

\n" );