Factor completely. x^2-3x - 28
OA. (x-7)(x + 4)
B. (x + 7)(x-4)
O C. (x + 14)(x - 2)
OD. (x + 14)(x + 2)

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.