Work Step by Step
Note that $-a$ for any value $a$ is the same as $-1 \cdot a$ (There are no parentheses around the $11$). In this example, $-11^2=-1\cdot 11^2=-1(11)(11)=-121$.
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.