## Geometry: Common Core (15th Edition)

$-x(y-8)^2$ Substitute the given values of x and y. =$-(-2)(5-8)^2$ The order of operations tells us to solve terms in parenthesis first. =$-(-2)(-3)^2$ The order of operations tells us to solve exponents next. =$-(-2)(9)$ Finally work left to right multiplying terms. Finding the negative of a number is the same as multiplying by -1. =$(2)(9)$ =$18$