Answer
$-x^2-2x+3$
Work Step by Step
We write an expression to express this addition problem: $(7x-11)+(-x^2-5x+9)+(-4x+5)$
We use the commutative, associative, and distributive properties to group like terms: $(-1)x^2+(7+(-5)+(-4))x+(-11+9+5)$
We combine the like terms within each set of parentheses: $-x^2+(-2x)+3=-x^2-2x+3$
