carmine5731 carmine5731 15-04-2020 Mathematics contestada Which function has real zeros at x = 3 and x = 7? Of(x) = x2 + 4x - 21 O f(x) = x2 - 4x - 21 Of(x) = x2 - 10x + 21 O f(x) = x2 - 10x – 21