document.write( "Question 290627: Find the vertex of the parabola:
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document.write( "y=-x²+8x+16 \n" );
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Algebra.Com's Answer #210295 by user_dude2008(1862)![]() ![]() ![]() You can put this solution on YOUR website! y=-x^2+8x+16\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y=-(x^2-8x-16)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y=-(x^2-8x-16+16-16)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y=-(x^2-8x+16-16-16)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y=-((x-4)^2-16-16)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y=-((x-4)^2-32)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y=-(x-4)^2+32\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "vertex is (4,32) \n" ); document.write( " |