document.write( "Question 256369: express the function f(x) = -5x^2 +20x +2 in vertex form \n" ); document.write( "

Algebra.Com's Answer #188623 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"f%28x%29+=+-5x%5E2+%2B20x+%2B2\"$
\n" ); document.write( "Complete the square.
\n" ); document.write( " $\"f%28x%29+=+-5%28x%5E2+-4x%29+%2B2\"$
\n" ); document.write( " $\"f%28x%29+=+-5%28x%5E2+-4x%2B4%29+%2B2%2B20\"$
\n" ); document.write( " $\"f%28x%29+=+-5%28x-2%29%5E2+%2B22\"$
\n" ); document.write( " $\"+graph%28+300%2C+300%2C+-5%2C+5%2C+-25%2C+25%2C+-5x%5E2+%2B20x+%2B2%29+\"$ \n" ); document.write( "

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