Question

(5n-1) \(⋮\)(n-2)

tìm n

(nhớ giải thích dùm mình)

Answer 1

(5n-1) $⋮$(n-2)

suy ra 5n-2+3 ⋮ (n-2)

ma 5n-2⋮ n-2

vi vay 5n-1⋮n-2

khi 3 ⋮ n-2

suy ra n-2 la uoc cua 3 gom cac so 1;3;-1;-3

vay n la cac so 3;5;1;-1

theo minh giai vay la xong roi day

cai nay minh noi them cho ban hieu:

1) 5n-1⋮n-2

co the suy ra 5n-2⋮ n-2 vi tru 2 cong 3 cung nhu cong 1 thoi

2)neu ban khong hieu ,ban co the xem them cong thuc ve chia het trong sgk lop 6 tap 2 bai 13 hau gi do

mot so cho le ra phai viet bang ki hieu nhung minh khong biet cach viet ki hieu tren may pc nen xin moi nguoi thong cam