Graph 1: y = x² -7x +12, y = (x-3)(x-4), x = 3 or 4, y = 0, x = 0, y = 12, y = (x -3.5)² - 0.25, Local min (3.5,-0.25), Graph 2: y = x² +2x -15, y = (x-3)(x+5), x = 3 or -5, y = 0,  x = 0, y = -15, y = (x+1)² -16, Local min (-1,-16), Graph 3: y = -x² +8x-12, y = (x-6)(x-2), x = 6 or 2, y = 0, x = 0, y = -12, y = -(x -4)² + 4, Local max (4,4), Graph 4: y = x² -4x -5, y = (x-5)(x+1), x = 5 or -1, y = 0, x = 0, y = -5, y = (x -2)² -9, Local min (2,-9), Graph 5: y = x² -5x +6, y = (x-3)(x-2), x = 3 or 2, y =0, x = 0, y = 6, y = (x -2.5)² -0.25, Local min (2.5, -0.25), Graph 6: y = -x² +5x +14, y = (x-7)(x+2), x = 7 or -2, y = 0, x = 0, y = 14, y = -(x -2.5)² +20.25, Local max (2.5, 20.25),

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