#### Answer

(x+8)(x−16)

#### Work Step by Step

We first multiply the entire expression by 8 to get rid of fractions.
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 $-128$ and add to get $-8$. Thus, we find that the solution is:
$$(x+8)(x−16)$$