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Find the vertex of the parabola.
y = -4x2 - 16x - 11
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y = -4x2 - 16x - 11
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Find the vertex of the parabola.
y = -4x2 - 16x - 11
The equation f(x) = 4x2 − 16x + 9 represents a parabola. What is the vertex of the parabola?
(2, −7) ( −2, 57) (4, 9) (