document.write( "Question 470957: what do I need to do to solve problem written find two numbers whose product is 7 and whose sum is 8 \n" ); document.write( "

Algebra.Com's Answer #323024 by Tatiana_Stebko(1539) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"x\"$ and $\"y\"$ are two numbers
\n" ); document.write( " $\"system%28x%2Ay=7%2Cx%2By=8%29\"$
\n" ); document.write( "from the second equation $\"y=8-x\"$
\n" ); document.write( " $\"x%288-x%29=7\"$
\n" ); document.write( " $\"8x-x%5E2-7=0\"$ multiply by (-1)
\n" ); document.write( " $\"x%5E2-8x%2B7=0\"$
\n" ); document.write( " $\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$
\n" ); document.write( " $\"x+=+%28-%28-8%29+%2B-+sqrt%28%28-8%29%5E2-4%2A1%2A7+%29%29%2F%282%2A1%29+\"$
\n" ); document.write( " $\"x+=+%288+%2B-+sqrt%2836+%29%29%2F2+\"$
\n" ); document.write( " $\"x1+=+%288+%2B6+%29%2F2+=7\"$
\n" ); document.write( " $\"x2+=+%288+-6+%29%2F2+=1\"$
\n" ); document.write( "if $\"x1=7\"$ , then $\"y1=8-7=1\"$ => (7,1)
\n" ); document.write( "if $\"x2=1\"$ , then $\"y2=8-1=7\"$ => (1,7)
\n" ); document.write( "Answer these numbers are 1 and 7 \n" ); document.write( "

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