Question

please help guys......
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Answer 1

Answer:

$\frac{512}{125}$

or

$( \frac{8}{5}) ^{3}$

Step-by-step explanation:

express with a positive exponent by using reciprocal

$eg \\ \\ ( \frac{8}{5} )^{ - 4} = ( \frac{5}{8}) ^{4}$

then

$property = {a}^{m} \times {a}^{n} = {a}^{mn}$

answer will be

$( \frac{5}{8} ) ^{ - 3} = ({ \frac{8}{5}) }^{3}$

Answer 2

Answer:

HEY MATE HERE IS YOUR ANSWER :

$( \frac{8}{5} ) {}^{3}$

or

$\frac{512}{125}$

Step-by-step explanation:

$( \frac{5}{8} ) {}^{ - 7 } \times ( \frac{8}{5} ) {}^{ - 4}$

$using \: ( \frac{a}{b} ) {}^{ - n} = ( \frac{b}{a}) {}^{n}$

$( \frac{5}{8} ) {}^{ - 7} \times ( \frac{5}{8} ) {}^{4}$

$using \: a {}^{m} \times a {}^{n} = a {}^{m + n}$

$( \frac{5}{8} ) {}^{ - 3}$

$using \: ( \frac{a}{b} ) {}^{ - n} = ( \frac{b}{a}) {}^{n}$

$( \frac{8}{5} ) {}^{3}$

$\frac{512}{125}$

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