Question

Calcule:
(n-2).(n-1).(n-1)=

Answer 1

$(n - 2) \times (n - 1) \times (n - 1) \\ \\ (n - 2) \times {n}^{2} - 2n + 1 \\ \\ {n}^{3} -{2n}^{2} + n - 2 {n}^{2} + 4n - 2 \\ \\ {n}^{3} - 4 {n}^{2} + 5n - 2$