document.write( "Question 158118: find the equation of the axis of symetry and the coordinates of the vertex of each quadratic function problem 1: g(x)= 2x squared - 12x+6 \n" ); document.write( "
Algebra.Com's Answer #116507 by jim_thompson5910(35256)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "In order to find the vertex, we first need to find the x-coordinate of the vertex.\r
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\n" ); document.write( "\n" ); document.write( "To find the x-coordinate of the vertex, use this formula: \"x=%28-b%29%2F%282a%29\".\r
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\n" ); document.write( "\n" ); document.write( "\"x=%28-b%29%2F%282a%29\" Start with the given formula.\r
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\n" ); document.write( "\n" ); document.write( "From \"y=2x%5E2-12x%2B6\", we can see that \"a=2\", \"b=-12\", and \"c=6\".\r
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\n" ); document.write( "\n" ); document.write( "\"x=%28-%28-12%29%29%2F%282%282%29%29\" Plug in \"a=2\" and \"b=-12\".\r
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\n" ); document.write( "\n" ); document.write( "\"x=%2812%29%2F%282%282%29%29\" Negate \"-12\" to get \"12\".\r
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\n" ); document.write( "\n" ); document.write( "\"x=%2812%29%2F%284%29\" Multiply 2 and \"2\" to get \"4\".\r
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\n" ); document.write( "\n" ); document.write( "\"x=3\" Divide.\r
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\n" ); document.write( "\n" ); document.write( "So the x-coordinate of the vertex is \"x=3\". Note: this means that the axis of symmetry is also \"x=3\".\r
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\n" ); document.write( "\n" ); document.write( "Now that we know the x-coordinate of the vertex, we can use it to find the y-coordinate of the vertex.\r
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\n" ); document.write( "\n" ); document.write( "\"y=2x%5E2-12x%2B6\" Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( "\"y=2%283%29%5E2-12%283%29%2B6\" Plug in \"x=3\".\r
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\n" ); document.write( "\n" ); document.write( "\"y=2%289%29-12%283%29%2B6\" Square \"3\" to get \"9\".\r
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\n" ); document.write( "\n" ); document.write( "\"y=18-12%283%29%2B6\" Multiply \"2\" and \"9\" to get \"18\".\r
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\n" ); document.write( "\n" ); document.write( "\"y=18-36%2B6\" Multiply \"-12\" and \"3\" to get \"-36\".\r
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\n" ); document.write( "\n" ); document.write( "\"y=-12\" Combine like terms.\r
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\n" ); document.write( "\n" ); document.write( "So the y-coordinate of the vertex is \"y=-12\".\r
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\n" ); document.write( "\n" ); document.write( "So the vertex is .
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