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Abbyabby33
a fost răspuns

Calculati al treilea element al unei progresii geometrice stiind ca b1=2 ,b2=6.

Răspuns :

6^=2b3
b3= 6^/2=36/2=18. b2^ = b1*b3
Adrianalitcanu2018

b1=2

b2=6

b2=b1*q

b2/b1=b1*q/b1=q

q=6/2=3

b3=b2*q

b3=6*3

b3=18

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