Math, asked by nivedhithaayanvi, 7 months ago

pls answer really quick useless answers will be reported​

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Answers

Answered by sb4477
2

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

Answered by abhi52329
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

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