Chapter 5 - Exponents and Polynomials - 5.1 - Addition and Subtraction of Polynomials - Problem Set 5.1 - Page 195: 34

$2x-11$

We write an expression to express this subtraction problem: $(-x-9)-(-3x+2)$ We use the commutative, associative, and distributive properties to group like terms: $(-1-(-3))x+(-9-(2))$ We combine the like terms within each set of parentheses: $2x+(-11)=2x-11$