## Functions Modeling Change: A Preparation for Calculus, 5th Edition

$$x^2-2x+1$$
Performing the given operation and then combining like terms as necessary in order to simplify, we find: $$\left(1-x\right)^2 \\ 1^2-2\cdot \:1\cdot \:x+x^2 \\ x^2-2x+1$$