Factor completely: 3x2 + 2x - 1. Answer. (3x + 1) (x + 1). (3x + 1) (x - 1). (3x - 1) (x + 1). (3x - 1) (x - 1).

3x^2 + 2x - 1 = 3x^2 + 3x - x - 1 = 3x (x + 1) - 1 (x + 1) = (x+1) (3x - 1)

The correct answer for this question is " (3x - 1) (x + 1). "

This is how to factor the given polynomial:

3x2 + 2x - 1

(3x - 1) (x + 1)

It takes trial and error in order to get the final factor of a given polynomial. It has to be exact and correctly done.