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Where is the vertex of the graph of y = -x^2+4x+5 located?

(2.9)
(-2, -7)
(2, 5)
(-2, 1)

User Don Tomato
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1 Answer

6 votes
Hello,

y=-x²+4x+5=-(x²-4x+4)+5+4=-(x-2)²+9

Answer A (2,9)
User Noqrax
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