Question

4n+14 ⋮ n+1

Answer 1

4n+14⋮n+1

4(n+1)+10⋮n+1

⇒10⋮n+1\(\left\{\left(4\left(n+1\right)\right)\text{⋮}n+1\right\}\)

⇒n+1∈ Ư(10)=\(\left\{1,2,5,10\right\}\)

⇒n∈\(\left\{0,1,4,9\right\}\)

Answer 2

Câu này làm rồi em nhé 

https://hoc24.vn/cau-hoi/tim-so-tu-nhien-n-sao-cho4n14n1.1892748799601

Answer 3

(4n+14)⋮(n+1)(4n+14)⋮(n+1)

⇔4(n+1)+10⋮(n+1)⇔4(n+1)+10⋮(n+1)

⇔(n+1)∈Ư(10)={1;−1;2;−2;5;−5;10;−10}⇔(n+1)∈Ư(10)={1;−1;2;−2;5;−5;10;−10}

Do