Question

complete de modo-a obter afirmações verdadeiras
$\sqrt{?} = 9$
$\sqrt{?} = 20$
$\sqrt{?} = 0.2$
$\sqrt{?} \frac{6}{5}$
$\sqrt[3]{?} = 9$
$\sqrt[3]{?} = 0$
$\sqrt[3]{?} = 0$
$\sqrt[3]{?} = 0.1$
$\sqrt{?} \frac{1}{2}$

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Answer 1

Explicação passo-a-passo:

Eleve os dois termos ao quadrado

$\sqrt{?}=9\\(\sqrt{?})^{2}  =9^{2} \\?=81$

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$\sqrt{?}=20\\ (\sqrt{?})^{2}  =20^{2} \\?=400$

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$\sqrt{?}=0,2\\ (\sqrt{?} )^{2} =(0,2)^{2} \\?=0,04$

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$\sqrt{?}=\frac{6}{5}\\  (\sqrt{?})^{2}  =(\frac{6}{5} )^{2} \\?=\frac{36}{25}$

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Eleve os dois termos ao cubo

$\sqrt[3]{?}=9\\ (\sqrt[3]{?})^{3}  =9^{3} \\?=729$

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$\sqrt[3]{?}=0\\ (\sqrt[3]{?})^{3}  =0^{3} \\?=0$

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$\sqrt[3]{?}=0,1\\ (\sqrt[3]{?})^{3}  =(0,1)^{3} \\?=0,001$

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$\sqrt{?}=\frac{1}{2}  \\(\sqrt{?})^{2}  =(\frac{1}{2} )^{2} \\?=\frac{1}{4}$