Question

помогите сократить дробь
(2k+1)!/(2k-1)!
(4m-1)!/(4m-3)!

Answer 1

Ответ:

$(2k + 1)(2k - 1) = 4k {}^{2} - 1$

$(4m - 1)(4m - 3) = 16m {}^{2} - 12m - 4m + 3 = 16m {}^{2} +16m + 3$