document.write( "Question 1198846: 5. Convert the following equation into vertex form by completing the square.
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Algebra.Com's Answer #832500 by Edwin McCravy(20056) $\"\"$ $\"About$

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document.write( "The vertex form of a parabola is:\r\n" );
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document.write( " where (h,k) is the vertex.\r\n" );
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document.write( "Factor 2 out of the first two terms only:\r\n" );
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document.write( "We must add and subtract the proper number inside the parentheses to\r\n" );
document.write( "cause  to become a perfect square.  To do that we take\r\n" );
document.write( "1/2 of the coefficient of x, which is 6.  1/2 of 6 is 3.  Then we\r\n" );
document.write( "square 3 and get 9.  So 9 is the number we must add, then subtract,\r\n" );
document.write( "i.e., +9-9 inside the parentheses:\r\n" );
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document.write( "Next we factor only the first three terms inside the parentheses:\r\n" );
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document.write( "And, as you see it factors as the square of a binomial:\r\n" );
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document.write( "Next we distribute the 2 into the parentheses leaving the (x+3)² intact.\r\n" );
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document.write( "Comparing to \r\n" );
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document.write( " where (h,k) is the vertex.\r\n" );
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document.write( "The vertex is (h,k) = (-3,-22)\r\n" );
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document.write( "Edwin

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