Question

Determinati numerle natural a si bastfel in cat (a+2)x(b-3)=28

Answer 1

a+2=28⇒a=26
b-3=28⇒b=31
a.b=806
Sper ca te.am ajutat:)))

Answer 2

(a+2)(b-3)= 28
a+2≥2, 28>0 => b-3>0
D(28)={1,2,4,7,14,28} pot fi pozitive sau negative
28=1*28=2*14=4*7

daca a+2=2 => a=0 si b-3=14 => b=17
daca a+2=4 => a=2 si b-3=7 => b=10
daca a+2=7 => a=5 si b-3=4 => b=7
daca a+2=14 => a=12 si b-3=2 => b=5
daca a+2=28 => a=26 si b-3= 1 => b=4

O zi buna!