Work Step by Step
Square both sides of the equation to get $$y-1=13^2=169$$ Finally, add $1$ to both sides to get $$y=169+1=170$$
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.