Question

Persamaan n!/(n-2)=6 berlaku jika nilai n

Answer 1

N! / (n-2)! = 6
n (n-1) (n-2)! / (n-2)! = 6
n^2 -n = 6

berlaku jika nilai n = 3 
3^2 - 3 = 6 

Answer 2

n! / (n-2)! = 6
n (n-1) (n-2)! / (n-2)! = 6
n (n - 1) = 6
n² - n = 6
n² - n - 6 = 0
(n - 3) (n + 2) = 0
n = 3 atau n = -2
n di sini merupakan bil bulat positif, jadi yg benar n = 3

semoga membantu ya :)