Question 1

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En una progressió geomètrica, begin mathsize 12px style bold a subscript begin bold style 6 end style bold space end subscript bold equals begin bold style negative 64 end style bold space bold space bold i bold space bold a subscript begin bold style 8 end style bold space end subscript bold space bold equals begin bold style negative 256 end style end style 

a) Calcula la raó. 

b) Calcula el primer terme

 

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