Expand
-U^{2}+2UX-X^{2}
Evaluate
-\left(X-U\right)^{2}
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-\left(X^{2}-2XU+U^{2}\right)
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(X-U\right)^{2}.
-X^{2}+2XU-U^{2}
To find the opposite of X^{2}-2XU+U^{2}, find the opposite of each term.
-\left(X^{2}-2XU+U^{2}\right)
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(X-U\right)^{2}.
-X^{2}+2XU-U^{2}
To find the opposite of X^{2}-2XU+U^{2}, find the opposite of each term.
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