Respostas
respondido por:
14
a) √8 / √5
√8 √5 = √40 = √4 .√10 = 2√10
------ ------- ------------ -----------
√5 √5 5 5 5
b)
8√7/ 5√2
8√7 √2 = 8√14 = 8√14 (:2) = 4√14
-------- ----------- --------- ---------
5√2 √2 5.2 10 (:2) 5
c)15/ ∛7²
15 15 ∛49 15∛49
--------- --------- ------ = -----------
∛7² ∛49 ∛49 49
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d) 18/⁴√6
18 ⁴√6 = 18 ⁴√6
---- ------- ---------- = 3 ⁴√6
⁴√6 ⁴√6 6
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
e) 1/4∛2
1 ∛2 = ∛2 = ∛2
--------- ------ ------- -------
4∛2 ∛2 4.2 8
√8 √5 = √40 = √4 .√10 = 2√10
------ ------- ------------ -----------
√5 √5 5 5 5
b)
8√7/ 5√2
8√7 √2 = 8√14 = 8√14 (:2) = 4√14
-------- ----------- --------- ---------
5√2 √2 5.2 10 (:2) 5
c)15/ ∛7²
15 15 ∛49 15∛49
--------- --------- ------ = -----------
∛7² ∛49 ∛49 49
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d) 18/⁴√6
18 ⁴√6 = 18 ⁴√6
---- ------- ---------- = 3 ⁴√6
⁴√6 ⁴√6 6
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
e) 1/4∛2
1 ∛2 = ∛2 = ∛2
--------- ------ ------- -------
4∛2 ∛2 4.2 8
Perguntas similares
7 anos atrás
7 anos atrás
7 anos atrás
9 anos atrás
9 anos atrás
9 anos atrás
9 anos atrás
9 anos atrás