F x 3x 2 6x 9 July 8, 2019 16 32 64 128 F x )= 3x 2 6x 9 in vertex form F x )= 3x2 6x 9 Which is the vertex of the quadratic function f x )= 3x 2 6x 9 F(x) = x ^ 3 + 6x ^ 2 + 9x