document.write( "Question 835918: Complete the square to write the function in
\n" ); document.write( "f(x) = a(x − h)^2 + k
\n" ); document.write( " form. Determine the vertex and the axis of symmetry of the graph of the function.
\n" ); document.write( "f(x) = −4x^2 + 16x − 42\r
\n" ); document.write( "\n" ); document.write( "equation:
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Algebra.Com's Answer #503817 by josgarithmetic(39617) $\"\"$ $\"About$

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Study the lesson, \"Completing the Square to Solve General Quadratic Equation\". Find it through the lessons link in my profile.\r
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\n" ); document.write( "\n" ); document.write( "First factor the $\"-4\"$ from the quadratic expression, and then add and subtract the missing square term.\r
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\n" ); document.write( "\n" ); document.write( " $\"%28-4%29%28x%5E2-4x%2B42%2F4%29\"$ is the factored form, and then the square term to add and subtract on the INSIDE of the parentheses is $\"%28-4%2F2%29%5E2=4\"$ . The lesson explains everything more thoroughly. \n" ); document.write( "

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