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Find the coordinates of the vertex of the following parabola algebraically.  Write your answer as an (x,y) point.

 

y = x^2 + 2x + 8.

 Sep 24, 2021
 #1
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Re-arrange to vertex form by 'completing the square'  for 'x'

 

y   =  (x+1)2  +7         vertex = -1,7

 Sep 24, 2021

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