Question

(2¯¹ ÷5¯¹) * (-5/8)¯²​

Answer 1

Answer:

$( {2}^{ - 1} \div {5}^{ - 1} ) \times (\frac{ - 5}{8})^{ - 2} \\ = ( \frac{1}{2} \div \frac{1}{5}) {} \times ( \frac{ - 8}{5} )^{2} \\ = ( \frac{1}{2} \times 5) \times \frac{64}{25} \\ = \frac{5}{2} \times \frac{64}{25} \\ = \frac{32}{5}$