document.write( "Question 1009938: What is the vertex of the equation
\n" ); document.write( "y=x^2+12x-4. \n" ); document.write( "

Algebra.Com's Answer #625417 by MathLover1(20849) $\"\"$ $\"About$

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$\"y=x%5E2%2B12x-4\"$ ....write it in the vertex form $\"y=a%28x-h%29%5E2%2Bk\"$ where $\"h\"$ and $\"k\"$ are $\"x\"$ and $\"y\"$ coordinates of the vertex\r
\n" ); document.write( "\n" ); document.write( " $\"y=%28x%5E2%2B12x%29-4\"$ ..........complete square\r
\n" ); document.write( "\n" ); document.write( " $\"y=%28x%5E2%2B12x%2Bb%5E2%29-b%5E2-4\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=%28x%5E2%2B12x%2B6%5E2%29-6%5E2-4\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=%28x%2B6%29%5E2-36-4\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=%28x%2B6%29%5E2-40\"$ \r
\n" ); document.write( "\n" ); document.write( "so, $\"h=-6\"$ and $\"k=-40\"$ and the vertex is at ( $\"-6\"$ , $\"-40\"$ )\r
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