Question

AJUDA PFV!!!!!!! PRECISO ATE SEGUNDA

Answer 1

Resposta:

1)   4$\sqrt{6\\}$

2)  18

3) 7

4) 10$\sqrt{21\\}$

Explicação passo-a-passo:

1)

$\frac{8\sqrt{30}}{2 \sqrt{5}} = \frac{8\sqrt{2. 3. 5}}{2 \sqrt{5}} . \frac{\sqrt{5}}{\sqrt{5}} = \frac{8\sqrt{2. 3. 5^{2} }}{2 \sqrt{5^{2}}} = \frac{8.5\sqrt{2. 3}}{2.5} = 4\sqrt{6}$

2)

$\frac{99\sqrt[3]{56} }{11\sqrt[3]{7} } = \frac{99\sqrt[3]{2^{3}.7 } }{11\sqrt[3]{7} } . \frac{\sqrt[3]{7^{2}} }{\sqrt[3]{7^{2}} } = \frac{9.2.7 }{7} = 18$

3)

$A = \sqrt[3]{7} . \sqrt[3]{49} \\A = \sqrt[3]{7} . \sqrt[3]{7^{2} } \\A = \sqrt[3]{7^{3} } = 7$

4)

$A = 2\sqrt[2]{3} . 5\sqrt[2]{7} \\A = 10.\sqrt[2]{7.3}\\A = 10.\sqrt[2]{21}$