Question

2×2×5×N =

Decomponha em fatores primos os números abaixos
(A) 140
(B) 225

Answer 1

A)

140  |  2

70   |   2

35   |   5

7      |   7

140 = 2^2 . 5 . 7

B)

225  |  3

75     |  3

25     |  5

5       |  5

225 = 3^2 . 5^2

Resposta:

A) 2^2 . 5 . 7

B) 3^2 . 5^2

Answer 2

Explicação passo-a-passo:

a)

$\sf 140~~~~|~~2$

$\sf ~70~~~~~|~~2$

$\sf ~35~~~~~|~~5$

$\sf ~~~7~~~~~|~~7$

$\sf ~~~1$

$\sf \large\red{140=2^2\cdot5\cdot7}$

b)

$\sf 225~~~~|~~3$

$\sf ~75~~~~~|~~3$

$\sf ~25~~~~~|~~5$

$\sf ~~~5~~~~~|~~5$

$\sf ~~~1$

$\sf \large\red{225=3^2\cdot5^2}$