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Stels [109]
3 years ago
8

Calculate $\left(\frac{9}{7}\right)^{2} \left(\frac{2}{7}\right)^{-2}$.

Mathematics
1 answer:
DerKrebs [107]3 years ago
6 0

$\left(\frac{9}{7}\right)^{2} \left(\frac{2}{7}\right)^{-2}$

=

(\frac{81}{49} )( \frac{49}{4} )

=

( \frac{81}{1} )( \frac{1}{4} )

=

\frac{81}{4}

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