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Use the graph of the function f(x) = (x + 1)² + 2. Identify the vertex and
the axis of symmetry.

Answer :

1. Vertex: f(x)=x^2+2x+3
=> a=1 b=2
=> x=-2/2*1 => x=-2/2
=> x=-1
=> (-1,2)

2. Axis of symmetry: x=-1

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