Question

Factor by grouping:
x to the third power +4x square-3x-12

Answer 1

Glen/Taegan, stop switching names.

Answer 2

x^3 + 4x^2 - 3x - 12.
(x^3 + 4x^2) + (-3x -12)
x^2 (x + 4) -3(x + 4)
(x + 4)(x^2 -3)