Chapter R - Section R.3 - Exponents, Roots, and Order of Operations - R.3 Exercises - Page 30: 67

$-79$

Using order of operations and the concepts of the absolute value of a number, the given expression, $ |-6-5|(-8)+3^2 ,$ simplifies to \begin{array}{l}\require{cancel} |-11|(-8)+9 \\\\= (11)(-8)+9 \\\\= -88+9 \\\\= -79 .\end{array}