Question

pls answer really quick useless answers will be reported​

Answer 1

Step-by-step explanation:

{(-2/5)^-1}^-2

(-2/5)^2

(2/5)^2

4/25

(2/7)^-3 * [(7/2)^2/(7/2)^5]

(2/7)^-3 * [(7/2)^2 * (2/7)^5]

(2/7)^-3 * [(7/2)^2 * (7/2)^-5]

(2/7)^-3 * [(7/2)^-3]

(2/7)^-3 * (2/7)^3

(2/7)^0

1

Answer 2

Step-by-step explanation:

1.

${ ({ (\frac{ - 2}{5} })^{ - 1}) }^{ - 2}$

$= { ({ \frac{ - 5}{2} }) }^{ - 2}$

$= { ({ \frac{ - 2}{5} }) }^{ 2}$

$= \frac{4}{25}$

2.

${( \frac{2}{7} )}^{ - 3} \times ( { \frac{7}{2}) }^{2} \div {( \frac{7}{2}) }^{5}$

${( \frac{7}{2} )}^{3} \times ( { \frac{7}{2}) }^{2} \div {( \frac{7}{2}) }^{5}$

$( { \frac{7}{2}) }^{(3 + 2) - 5}$

${ \frac{7}{2} }^{0} = 1$