document.write( "Question 256368: how to figure out the equation of the axis of symmetry from f(x)=4x^2 -12x +5 \n" ); document.write( "

Algebra.Com's Answer #188521 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Complete the square.
\n" ); document.write( " $\"f%28x%29=4x%5E2+-12x+%2B5\"$
\n" ); document.write( " $\"f%28x%29=4%28x%5E2-3x%29%2B5\"$
\n" ); document.write( " $\"f%28x%29=4%28x%5E2-3x%2B%289%2F4%29%29%2B5-4%289%2F4%29\"$
\n" ); document.write( " $\"f%28x%29=4%28x-%283%2F2%29%29%5E2-4\"$
\n" ); document.write( "

\n" ); document.write( ".
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\n" ); document.write( "x=3/2 is the axis of symmetry. \n" ); document.write( "

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