document.write( "Question 250565: Indicate the axis of symmetry of the parabola
\n" ); document.write( "y = x^2 + 8x + 20 \n" ); document.write( "

Algebra.Com's Answer #182467 by nerdybill(7384) $\"\"$ $\"About$

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Indicate the axis of symmetry of the parabola
\n" ); document.write( "y = x^2 + 8x + 20
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\n" ); document.write( "Remember the quadratic formula?
\n" ); document.write( " $\"%28-b+%2B-+sqrt%28b%5E2-4ac%29%29%2F%282a%29\"$
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\n" ); document.write( "Well, the axis of symmetry can be found by:
\n" ); document.write( " $\"x+=+-b%2F%282a%29\"$
\n" ); document.write( "The quadratic formula but without the +- radical.
\n" ); document.write( ".
\n" ); document.write( " $\"x+=+-b%2F%282a%29\"$
\n" ); document.write( " $\"x+=+-8%2F%282%281%29%29\"$
\n" ); document.write( " $\"x+=+-8%2F2\"$
\n" ); document.write( " $\"x+=+-4\"$ (axis of symmetry)
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