document.write( "Question 557710: Use the quadratic formula to solve the equation.
\n" ); document.write( "x^2-x= -10 \n" ); document.write( "

Algebra.Com's Answer #362732 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+x%5E2+-+x+=+-10+\"$
\n" ); document.write( " $\"+x%5E2+-+x+%2B+10+=+0+\"$
\n" ); document.write( "This is in the form
\n" ); document.write( " $\"+ax%5E2+%2B+bx+%2B+c+=+0+\"$
\n" ); document.write( "so I can use the quadratic formula:
\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( " $\"+b+=+-1+\"$
\n" ); document.write( " $\"+c+=+10+\"$
\n" ); document.write( " $\"x+=+%28-%28-1%29+%2B-+sqrt%28+%28-1%29%5E2-4%2A1%2A10+%29%29%2F%282%2A1%29+\"$
\n" ); document.write( " $\"x+=+%28+1+%2B-+sqrt%28+1+-+40+%29%29+%2F+2+\"$
\n" ); document.write( " $\"x+=+%28+1+%2B-+sqrt%28+-39+%29%29+%2F+2+\"$
\n" ); document.write( " $\"x+=+%28+1+%2B-+sqrt%28+-1+%29%2Asqrt%2839%29+%29+%2F+2+\"$
\n" ); document.write( " $\"+x+=+%28+1+%2B+sqrt%2839%29%2Ai+%29+%2F+2+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+x+=+%28+1+-+sqrt%2839%29%2Ai+%29+%2F+2+\"$
\n" ); document.write( "------------------------
\n" ); document.write( "Check answer:
\n" ); document.write( " $\"+x%5E2+=+%28%28+1+-+sqrt%2839%29%2Ai+%29+%2F+2%29%5E2+\"$
\n" ); document.write( " $\"+x%5E2+=+%28+1+-+2%2Asqrt%2839%29%2Ai+-+39+%29+%2F+4+\"$
\n" ); document.write( "

\n" ); document.write( " $\"+x%5E2+-+x+=+%281%2F4%29%2A%28+-38+-+2+%29+\"$
\n" ); document.write( " $\"+x%5E2+-+x+=+-10+\"$
\n" ); document.write( "OK \n" ); document.write( "

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