B n 2 n 6 5. Дробь 45????32????−1⋅5????−2 45 n 3 2 n − 1 ⋅ 5 n − 2 .. 50n/5n-1 2n-1. Дробь:n!(n+1)!. 2^N+1 + 2^N-2. (N+3)2- (N-3)2. (N+2)^(N+2) математика. 2n-3 - 2n0. 1 2 2 2 N N N. 1^2+2^2+3^2+...+N^2. N^3 +(N−1)^3 +(N−2)^3 +...+1^3 =M. N-1 + N-2+ N-3. M1, m2, m3, n1, n2, n3, o