document.write( "Question 913674: quadratic equation f(x)=x^2-16x+84 in vertex form \n" ); document.write( "

Algebra.Com's Answer #554643 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Complete the square.
\n" ); document.write( " $\"f%28x%29=x%5E2-16x%2B84\"$
\n" ); document.write( " $\"f%28x%29=%28x%5E2-16x%2B64%29%2B%2884-64%29\"$
\n" ); document.write( " $\"f%28x%29=%28x-8%29%5E2%2B20\"$
\n" ); document.write( "(8,20) is the vertex. \n" ); document.write( "

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