Question

$\sqrt[4]{128} \div \sqrt[4]{8}$

5) o valor da divisão é:
a) 8
b) 5
c) 16
d) 4
e) 2
​

Answer 1

Resposta:

(c)

Explicação passo-a-passo:

Resposta:

\begin{lgathered}15\sqrt{6} \div3\sqrt{2} =15\div3\sqrt{6\div2} =5\sqrt{3} \\ \\ \sqrt{{72\over8}} =\sqrt{72\div8} =\sqrt{9} =3\\ \\ \sqrt{{180\over10}} =\sqrt{180\div10} =\sqrt{18} =\sqrt{2.3^2} =3\sqrt{2}\end{lgathered}

15

6

÷3

2

=15÷3

6÷2

=5

3

8

72

=

72÷8

=

9

=3

10

180

=

180÷10

=

18

=

2.3

2

=3

2

\begin{lgathered}8\sqrt{20} \div4\sqrt{2} =8\div4\sqrt{20\div2} =2\sqrt{10} \\ \\ \sqrt[3]{40} \div\sqrt[3]{5} =\sqrt[3]{40\div5} =\sqrt[3]{8} =\sqrt[3]{2^3} =2\\ \\ {20\sqrt{24} \over5\sqrt{3} }=20\div5\sqrt{24\div3} =4\sqrt{8} =4\sqrt{2^2.2} =4.2\sqrt{2} =8\sqrt{2}\end{lgathered}

8

20

÷4

2

=8÷4

20÷2

=2

10

3

40

÷

3

5

=

3

40÷5

=

3

8

=

3

2

3

=2

5

3

20

24

=20÷5

24÷3

=4

8

=4

2

2

.2

=4.2

2

=8

2