Question

potencias reduce a una única potencia de exponente natural

Answer 1

   [(2/5)²]⁻³ / [(5/2)⁻²]⁻⁵
= [2/5]⁻⁶ / [5/2]⁻¹⁰
= [5/2]¹⁰ / [2/5]⁶
= {[5/2]¹⁰} * {[5/2]⁶}
= {5/2} ¹⁶