How do I use the vertex formula to determine the vertex of the graph for $f(x)=x^2-4$ ?

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Answer 1 · 2015-05-08T13:31:08

$x = -b/2a = 0 --> f(0) = -4$

Coordinate of vertex: (0, -4).

x-intercepts: x = 2 and x = -2

How do I use the vertex formula to determine the vertex of the graph for f(x)=x^2-4 f(x)=x^2-4 ?