What’s the answer to the question?

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible