Which equation is y is equal to negative 6 x squared plus 3 x plus 2 rewritten in vertex form?

For y = -6x² + 3x + 2, the vertex’s x-coordinate is -b/(2a) = -3/(2 · -6) = 1/4. Substituting x = 1/4 gives y = 19/8, so the vertex form is y = -6(x - 1/4)² + 19/8, which is choice D.

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