Question

simplify the following​

Answer 1

root of 81/49=9/7 and inverse is 7/9 and cube wil be 729/343=2.12536443148

Answer 2

Answer:

$= \frac{343}{729}$

Step-by-step explanation:

$= { (\frac{81}{49} )}^{ - \frac{3}{2} } \\ = { (\frac{ {9}^{2} }{ {7}^{2} } )}^{ - \frac{3}{2} } \\ = {( \frac{9}{7}) }^{2 \times ( - \frac{3}{2} )} \\ = {( \frac{9}{7} )}^{ - 3} \\ = { (\frac{7}{9}) }^{3} \\ = \frac{343}{729}$

I hope it helps.

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