document.write( "Question 445514: What is the answer to x^2-7x-8=0 \n" ); document.write( "

Algebra.Com's Answer #306881 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+x%5E2-7x-8=0+\"$
\n" ); document.write( "Use the quadratic equation
\n" ); document.write( " $\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$
\n" ); document.write( " $\"+a+=+1+\"$
\n" ); document.write( " $\"+b+=+-7+\"$
\n" ); document.write( " $\"+c+=+-8+\"$
\n" ); document.write( " $\"x+=+%28-%28-7%29+%2B-+sqrt%28+%28-7%29%5E2-4%2A1%2A%28-8%29+%29%29%2F%282%2A1%29+\"$
\n" ); document.write( " $\"x+=+%28+7+%2B-+sqrt%28+49+%2B+32%29%29+%2F+2+\"$
\n" ); document.write( " $\"x+=+%28+7+%2B-+sqrt%28+81%29%29+%2F+2+\"$
\n" ); document.write( " $\"x+=+%28+7+%2B+9+%29+%2F+2+\"$
\n" ); document.write( " $\"+x+=+8+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"x+=+%28+7+-+9+%29+%2F+2+\"$
\n" ); document.write( " $\"+x+=+-1+\"$
\n" ); document.write( "-------------
\n" ); document.write( "check answers:
\n" ); document.write( " $\"+x+=+-1+\"$
\n" ); document.write( " $\"+x%5E2-7x-8=0+\"$
\n" ); document.write( " $\"+%28-1%29%5E2-7%2A%28-1%29-8=0+\"$
\n" ); document.write( " $\"+1+%2B+7+-+8+=+0+\"$
\n" ); document.write( " $\"+0+=+0+\"$
\n" ); document.write( "You can check other answer \n" ); document.write( "

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