document.write( "Question 1166846: Find the vertex, Axis symetry for\r
\n" ); document.write( "\n" ); document.write( "f(x)=2x^2+14X+26 \n" ); document.write( "
Algebra.Com's Answer #791398 by ikleyn(52814)\"\" \"About 
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document.write( "To find a vertex, use the standard formula for its x-coordinate\r\n" );
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document.write( "    x = \"-b%2F%282a%29\",\r\n" );
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document.write( "where \"a\" is the coefficient at x^2 and B is the coefficient at x.\r\n" );
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document.write( "In your case,  a = 2, b = 14,  so  x = \"-14%2F%282%2A2%29\" = \"-7%2F2\" = -3.5.\r\n" );
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document.write( "To find y-coordinate of the vertex, calculate the function value at x= 3.5.\r\n" );
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\n" ); document.write( "\n" ); document.write( "On finding the maximum/minimum of a quadratic function and its vertex see the lessons\r
\n" ); document.write( "\n" ); document.write( "    - HOW TO complete the square to find the minimum/maximum of a quadratic function\r
\n" ); document.write( "\n" ); document.write( "    - Briefly on finding the minimum/maximum of a quadratic function\r
\n" ); document.write( "\n" ); document.write( "    - HOW TO complete the square to find the vertex of a parabola\r
\n" ); document.write( "\n" ); document.write( "    - Briefly on finding the vertex of a parabola\r
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\n" ); document.write( "\n" ); document.write( "Also,  you have this free of charge online textbook in ALGEBRA-I in this site\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this textbook under the topic \"Finding minimum/maximum of quadratic functions\". \r
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\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
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\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I
\n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r
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