Respuesta :

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a1 = 5 
a2 = 5*r = 5*(5/4) = 25/4 
a3 = 5*r² = 5*(5/4)² = 125/16 
a4 = 5*r³ = 5*(5/4)³ = 625/256 
a5 = 5*r⁴ = 5*(5/4)⁴ = 3125/1024