Question

Descompuneti in factori primi urmatoarele numere naturale:
a) 12 b) 18 c) 20 d) 24 e) 28
f) 32 g) 36 h)40 i) 45 j) 48

Answer 1

Răspuns:

a) 12 = 2 x 2 x 3 = 2² x 3  

b) 18 = 2 x 3 x 3  = 2 x 3²

c) 20 = 2 x 2 x 5 = 2² x 5

d) 24 = 2 x 2 x 2 x 3 = 2³ x 3  

e) 28 = 2 x 2 x 7 = 2² x 7  

f) 32 = 2 x 2 x 2 x 2 x 2  = 2⁵

g) 36 = 2 x 2 x 3  x 3 = 2² x 3²  

h) 40 = 2 x 2 x 2 x 5 = 2³ x 5  

i) 45 = 3 x 3  x 5 = 3² x 5  

j) 48 = 2 x 2 x 2 x 2 x 3 = 2⁴ x 3