ight)^3}{3} = -rac{2}{3} - rac{-rac{8}{27}}{3} = -rac{2}{3} + rac{8}{81} = -rac{54}{81} + rac{8}{81} = -rac{46}{81} $. Final answer: oxed{-\dfrac{46}{81}}

Tue, 05 May 2026 02:25:27 +0000

Content under review