Determine o valor de:a) (11/13)-²=b) (5/7)²=.... Pergunta de ideia deHiyoriNyah

ALCACARENHO

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A
${( \frac{13}{11}) }^{2} = \frac{169}{121}$
b
${ (\frac{5}{7} )}^{2} = \frac{25}{49}$

0 votes Thanks 1

HiyoriNyah Vlw!

Jayrobeys

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Boa noite

veja:

a)

$( \frac{11}{13})^-^2\;=$

vc inverte a fração para alterar o sinal do expoente.

$( \frac{13}{11} )^2\;=$

$\frac{13}{11} \;x\; \frac{13}{11} \;=$

$\frac{169}{121}$

b)

$( \frac{5}{7} )^2\;=$

$\frac{5}{7} \;x\; \frac{5}{7} \;=$

$\frac{25}{49}$

$Bons\;estudos$

1 votes Thanks 1

HiyoriNyah Vlw! Me ajudou muito!

Jayrobeys Que bom que ajudei, Abraço!

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