-x^2+2x+2=

Raymond B. answered • 09/05/21

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-x^2 +2x +2

= -(x^2 -2x ) +2

= -(x^2 -2x +1) + 2 +1

= -(x-1)^2 + 3

is a downward opening parabola with vertex (1,3) = maximum point

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