а) (-2)² = (-2) ⋅ (-2) = 4
б) (-3)² = (-3) ⋅ (-3) = 9
в) (-1)⁵ = (-1) ⋅ (-1) ⋅ (-1) ⋅ (-1) ⋅ (-1) = -1
г) (-1,1)² = (-1,1) ⋅ (-1,1) = 1,21
Ответ: а) 4; б) 9; в) -1; г) 1,21