4 2n 3 5 3n 2 July 8, 2019 16 32 64 128 6 2n 4 5 )- 3 2 3n 9 1 3 5 2n 1 3n 2 4 (4 + 3n) ⋅ (3n − 2n) − (n − 1) ⋅ 5n = 3n(n-2)-4n(2n+3)+5n(n+2) при n=-2 5
