document.write( "Question 809394: Write the following equation in vertex form using completing the square:
\n" ); document.write( "y=2x^2 - x - 1
\n" ); document.write( "This is what I've tried so far, but I don't think I'm doing it right.
\n" ); document.write( "y = (2x^2 - x +1/4) - 1 - 1/4 \n" ); document.write( "

Algebra.Com's Answer #487589 by KMST(5328) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"y=2x%5E2+-+x+-+1\"$
\n" ); document.write( " $\"y%2B1=2x%5E2+-+x\"$
\n" ); document.write( " $\"y%2B1=2%28x%5E2+-+x%2F2%29\"$
\n" ); document.write( " $\"x%5E2-x%2F2\"$ is part of $\"%28x-1%2F4%29%5E2=x%5E2-x%2F2%2B1%2F16\"$ ,
\n" ); document.write( "so we add $\"2%2A%281%2F16%29\"$ to both sides of the equal sign in $\"y%2B1=2%28x%5E2+-+x%2F2%29\"$ and get
\n" ); document.write( " $\"y%2B1%2B2%2F16=2%28x%5E2+-+x%2F2%29%2A2%2A%281%2F16%29\"$
\n" ); document.write( " $\"y%2B1%2B1%2F8=2%28x%5E2+-+x%2F2%2B1%2F16%29\"$
\n" ); document.write( " $\"y%2B9%2F8=2%28x+-+1%2F4%29%5E2\"$
\n" ); document.write( " $\"highlight%28y=2%28x+-+1%2F4%29%5E2-9%2F8%29\"$ \n" ); document.write( "

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