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Question #fb6c4

1 Answer

Mar 9, 2017

The vertex is at #(-5,-16)#

Explanation:

#x^2 +10x +9#

#= x^2 +10x +25 +9-25" "+-b^2/2#

#= (x +5)^2 -16#

This is in the form #(x+b)^2 +c#

The vertex is at #(-5,-16)#

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