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2011 la puterea, 0 2016 la puterea 1. 27×28×2 la puterea 2 ,11 la puterea 9:11 la puterea 2:11 ,2 la puterea 4 × 2 la puterea 11:(2 la puterea 2×2) =9) 23×27:(2la puterea 2×2la puterea 3 ,74×76):7 la puterea 3 . pls dau coroana .help urgent.