Question

ajudem aii pfvv preciso urgente

obs:quem responder coloco como a melhor resposta e urgente ​

Answer 1

Resposta:

Explicação passo-a-passo:

3. a)

$-\sqrt{81}- \sqrt[3]{-27} =\\-9-(-3=)\\-9+3=\\-6$

b)

Obs: Toda raiz 0 é igual a 0;

$\sqrt[3]{0} +\sqrt[3]{-1}+ \sqrt{0,25} =\\0-1+\sqrt{\frac{1}{4}}= \\-1+\frac{1}{2}=\\-\frac{1}{2} ou-0,5$

4.

$\sqrt{13^{2}-(-12)^{2} } =\\\\\\\sqrt{169-144} =\\\\\\\sqrt{25}=5$

5.a)

$\sqrt{0,25} =\sqrt{\frac{1}{4}} =\\\frac{1}{2} ou 0,5$

b)

$\sqrt[3]{0,008}= \sqrt[3]{\frac{1}{125} }= \\\\\frac{1}{5}ou 0,2$

c)

$\sqrt{(-8)^{2} }=$

|-8|=

8

d)

$-\sqrt{100} =\\\\\\sqrt{10^{2} }= \\\\-10$

e)

$\sqrt[7]{-1} =\\\\-\sqrt[7]{1} =\\\\-1$

f)

$\sqrt[3]{-125} =\\\\-\sqrt[3]{125} =\\\\-\sqrt[3]{5^{3}} =\\\\-5$