koltonevenson koltonevenson 02-05-2024 Mathematics Answered How to factor y = - x^2 + 4x + 12 for parabolas? You would make the -x^2 a positive and the positives negative, and then you would go with two number that add/subtract to be 4 and multiply to be 12 So that would look like (x + 2) (x - 6)