document.write( "Question 314436: Find the vertex and the axis of symmetry for the parabola y=2x^2+8x+5. \n" ); document.write( "

Algebra.Com's Answer #224783 by Fombitz(32388) $\"\"$ $\"About$

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Complete the square to get the equation into vertex form,
\n" ); document.write( " $\"y=a%28x-h%29%5E2%2Bk\"$
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\n" ); document.write( " $\"y=2%28x%5E2%2B4x%29%2B5\"$
\n" ); document.write( " $\"y=2%28x%5E2%2B4x%2B4%29%2B5-8\"$
\n" ); document.write( " $\"y=2%28x%2B2%29%5E2-3\"$
\n" ); document.write( "The vertex is ( $\"-2\"$ , $\"-3\"$ ).
\n" ); document.write( "The axis of symmetry is $\"x=-2\"$ .
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