The vertex of the parabola y = x 2 − 12 x + 40 y=x^2-12x+40 y = x 2 − 1 2 x + 4 0 is P = (a, b) P=(a, b) P = (a, b). If the y y y-intercept is Q = (0, c) Q=(0, c) Q = (0, c), what is the value of a + b + c a+b+c a + b + c?

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!In the given quadratic function y = ax 2 + bx + c, factor a from the first two