Question

VA ROG AJUTATI-MA URGENT!!!
AFLATII DIVIZORII LUI 15 SI DETERMINATI NR NATURALE X STIIND CA 15 TREI PUNCTE (X+1)
b) AFLATII DIVIZORII LUI 26 SI DETERMINATII NR NATURALE X STIIND CA 26 TREI PUNCTE IN SUS (2X+1)

Answer 1

a)
D15={1,3,5,15}
15divide (x+1)
=>x+1=1|-1 =>x=0
x+1=3|-1=> x=2
x+1=5|-1=>x=4
x+1=15|-1=> x=14

b)
D26={1,2,13,26}
26divide (2x+1)
2x+1=1|-1=>2x=0|:2
2x+1=2|-1=>2x=1|:2
xapartineN=> fals
2x+1=13|-1=>2x=12|:2=> x=6
2x+1=26|-1=>2x=25|:2dar x apartine N => fals