Question

Slove the my questions

Answer 1

1. 5^-4/4^-4 = 4^4/5^4
2.3^3 /3^-7 = 3^3/3^7

Answer 2

$\bigg(\dfrac{5}{4} \bigg)^{-4}$

We flip the fraction so that exponent will be positive:

$= \bigg(\dfrac{4}{5} \bigg)^{4}$

Remove the bracket:

$= \dfrac{4^4}{5^4}$

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$3^3 \times 3^{-7}$

We move the term with negative exponent to the denominator:

$= \dfrac{3^3}{3^7}$