document.write( "Question 191862: 2x^2-x=-9 \n" ); document.write( "

Algebra.Com's Answer #143963 by orca(409) $\"\"$ $\"About$

You can put this solution on YOUR website!
Note that this equation has no real solution.\r
\n" ); document.write( "\n" ); document.write( "It can be solved by using the quadratic formula:\r
\n" ); document.write( "\n" ); document.write( " $\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$
\n" ); document.write( "First write it in standard form
\n" ); document.write( " $\"2x%5E2-x%2B9=0\"$
\n" ); document.write( "Next substitute a = 2, b = -1 and c = 9 into the formula.
\n" ); document.write( " $\"x+=+%28-%28-1%29+%2B-+sqrt%28+%28-1%29%5E2-4%2A2%2A9+%29%29%2F%282%2A2%29+\"$
\n" ); document.write( " $\"x+=+%281+%2B-+sqrt%28+1-72+%29%29%2F4+\"$
\n" ); document.write( " $\"x+=+%281+%2B-+sqrt%28-71%29%29%2F4+\"$
\n" ); document.write( " $\"x+=+%281+%2B-+sqrt%2871%29i%29%2F4+\"$ \n" ); document.write( "

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