Work Step by Step
$(q-1)^2$ $=(q-1)(q-1)$ Foil: $=q^2-q-q+1$ Simplify: $=q^2-2q+1$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.