SubArea: Expressions with powers and rootsLevel: BProject ID: 1003134504Accepted: 1Clonable: 0Easy: 0The equality \( \left( \sqrt2-a\right)^3 = 2\sqrt2+18+3\sqrt2a^2-a^3 \) is valid for:\( a=-3 \)\( a=9 \)\( a=3 \)\( a=-9 \)
