Question

determinati valorile naturale nenule pe care le poate lua astfel incat (2n+1)|(7n+20)
va rog
multumesc
urgent​

Answer 1

Vezi raspunsul atasat

Answer 2

Răspuns:

2n+1|7n+20|*2

2n+1|2n+1|*7

=> 2n+1|14n+40

2n+1|14n+7

=> 2n+1|14n+40-(14n+7)=> 2n+1|33=> 2n+1∈D₃₃={1, 3, 11, 33} |-1

2n∈{0, 2, 10, 32}|:2

n∈{0, 1, 5, 16}

n≠0=>

=>n∈{1, 5, 16}