College Algebra (6th Edition)

In this question, factors are done by the grouping method 3 $x^{2}$ - x - 2 =3 $x^{2}$ - 3x + 2x- 2 = 3x(x - 1) + 2(x - 1) =(3x + 2)(x - 1) 3 $x^{2}$ - x - 2 is a composite polynomial (3x + 2) and (x - 1) are prime polynomials