Question

Aflati x e n,astfel incat . Este exercitiu 4,va rog mult!

Answer 1

(2x+7)/(x+1)=N, rezulta ca x+1 divide 2x+7

(2x+7)/(x+1)=(2x+2+5)/(x+1)=(2x+2)/(x+1) +5/(x+1)=

=2(x+1)/(x+1) +5/(x+1)=2+ 5/(x+1)

x+1 trebuie sa divida 5, rezulta:

x+1={1;5}, scadem 1:

x={0;4}