Question

decomponha as raízes
A) 80
B) 120

Answer 1

a-20

b- 40

só respondeu simples

Answer 2

a) 

$\sqrt{80}$

80 | 2
40 | 2
20 | 2
10 | 2
  5 | 5
  1 |  === 2⁴ . 5

===
$[tex] \sqrt{120} = \sqrt{2^3 . 3 . 5} =\ \textgreater \ 2\sqrt{30}$ [/tex]

===

b)
$\sqrt{120}$

120 | 2
  60 | 2
  30 | 2
  15 | 3
    5 | 5
    1 | === 2³ . 3 . 5