Question

calcule o valor de cada raízes

A)
$\sqrt{169}$
B)
$\sqrt[3]{ - 125}$

C)
$\sqrt[4]{81}$
D)
$\sqrt[5]{ - 32}$

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Answer 1

Explicação passo-a-passo:

A)

$\sqrt{169 } = 13 \: pois \\ 13.13 = 169$

B)

$\sqrt[3]{ - 125} = - 5 \\ pois \: ( - 5).( - 5).( - 5) = - 125$

C)

$\sqrt[4]{81} = 3 \\ pois \: 3.3.3.3 = 81$

D)

$\sqrt[5]{ - 32} = - 2 \\ pois \: ( - 2).( - 2).( - 2).( - 2).( - 2 ) = - 32$

Answer 2

Resposta:

A) 13        B) (-5)        C) 3        D) (-2)

Explicação passo a passo:

A)

$\sqrt{169}$

$\sqrt{13^{2} } \\\\13^{\frac{2}{2} } \\\\13^{1} \\\\13$

B)

$\sqrt[3]{-125} \\\\\sqrt[3]{(-5)^{3} } \\\\(-5)^{\frac{3}{3} } \\\\(-5)^{1} \\\\(-5)$

C)

$\sqrt[4]{81} \\\\\sqrt[4]{3^{4} } \\\\3^{\frac{4}{4} } \\\\3^{1} \\\\3$

D)

$\sqrt[5]{-32} \\\\\sqrt[5]{(-2)^{5} } \\\\(-2)^{\frac{5}{5} } \\\\(-2)^{1} \\\\(-2)$