Chapter 1 - 1.4 - Quadratic Equations and Applications - 1.4 Exercises - Page 110: 14

$$(x-4)(x+2)$$

Since the coefficient of the squared term is one, we know that the expression must factor to: $$ (x\pm a)(x\pm b)$$ Here, we see that a and b must multiply to get $-8$ and add to get $-2$. Thus, we find that the solution is: $$(x-4)(x+2)$$