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[(2supra3)la puterea 5]la puterea 4:(2supra3)la puterea 17

Răspuns :

la prima fractie se inmultesc puterile si obt (2/3) la puterea 20
2/3 la puterea20 : 2/3 la puterea 17=
se scad putreile si obt 2/3 la puterea 3
[(2/3)^5]^4 : (2/3)^17=
=(2/3)^5×4 :(2/3)^17=
=(2/3)^20 : (2/3)^17=
=(2/3)^20-17=
=(2/3)^3


(2/3)^3=2/3×2/3×2/3=4/9×2/3=8/27

am calculat si cat este 2/3 la puterea a treia , daca trebuie numai