SubArea: Expressions with powers and rootsLevel: CProject ID: 1003124906Accepted: 1Clonable: 0Easy: 0The number \( \left(\sqrt7+1\right)^4-\left(\sqrt7-1\right)^4 \) equals:\( 64\sqrt7 \)\( 32\sqrt7 \)\( \sqrt7 \)\( 2 \)
