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If the parabola y = 2x2-4x-5 is translated 3 units to the left and 2 units to the upper, the parabola C is obtained, then the analytical formula of parabola c about Y-axis symmetry is______ ．
∵ y = 2x2-4x-5 = 2 (x-1) 2-7, ∵ the vertex coordinates of the original parabola are (1, - 7), after translation, the vertex coordinates of the parabola are (- 2, - 5), ∵ the parabola C is: y = 2 (x + 2) 2-5, that is, y = 2x2 + 8x + 3, ∵ the analytical formula of the parabola about Y-axis symmetry of C is: y = 2x2-8x + 3, so the answer to this question is: y = 2x2-8x + 3
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