SubArea: Linear equations and inequalitiesLevel: AProject ID: 2010009006Source Problem: 2010009005Accepted: 0Clonable: 1Easy: 0Find the solution set of the following equation. \[(x-2)^2+(2+x)^2=8+2x^2 \]\( \mathbb{R}\)\( \{-1\} \)\( \{2\} \)\( \{-2\} \)
