Sanjay graphs a quadratic function that has x-intercepts of –3 and 7. Which functions could he have graphed? Check all that apply.g(x) = x2 – 4x – 21g(x) = (x – 3)(x + 7)g(x) = 3x2 – 12x – 63g(x) = –(x + 3)(x – 7)g(x) = x2 + 4x – 21