Question 1

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En una progressió geomètrica, el primer terme és begin mathsize 12px style begin bold style 2 end style end style i la raó begin mathsize 12px style begin bold style 3 end style end style

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a)  begin mathsize 12px style bold a subscript begin bold style 5 end style end subscript bold space end style

b) begin mathsize 12px style bold a subscript begin bold style 7 end style end subscript end style

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