Question

evaluate (2 raise to power -1 ÷ 5 raise to the power -1)² × (-5/8) raise to power -1​

Answer 1

Answer:

-4

Step-by-step explanation:

(2-¹÷5-¹)²×(-5/8)-¹

since a-¹=1/a

(1/2÷1/5)²×(-8/5)

(1/2×5)×(-8/5)

5/2×-8/5

5×-8/2×5

-4

Answer 2

Answer:

$\huge{\bold{\mathbb{\blue{Hey!!! \: Mate}}}}$

${ ({2}^{ (- 1)} \div {5}^{( - 1)} )}^{2} \times { (\frac{ - 5}{8}) }^{ - 1}$

$\rightarrow \: {( \frac{1}{2} \div \frac{1}{5}) }^{2} \times ( - \frac{8}{5} )$

$\rightarrow \: {( \frac{1}{2} \times \frac{5}{1} )}^{2} \times ( - \frac{8}{5} )$

$\rightarrow \: {( \frac{5}{2}) }^{2} \times ( - \frac{8}{5} )$

$\rightarrow \: \frac{25}{4} \times ( - \frac{8}{5} )$

$\rightarrow \: \bold{ - 10}$

hope it helps u...☺️