Chapter 8 - Polynomials and Factoring - 8-2 Multiplying and Factoring - Practice and Problem-Solving Exercises - Page 495: 19

The GCF is 4

Given expression : 4$x^{3}$+12x-28 Find the factors of each term: 4$x^{3}$=2$\times$2$\times$x$\times$x$\times$x 12x=3$\times$2$\times$2$\times$x -28=-1$\times$2$\times$2$\times$7 Thus, the common factors are : 2$\times$2=4.