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[(2 la puterea 2-3)•7+7 la puterea 0]:2 la puterea 3

Răspuns :

[(2²⁻³)•7+7⁰]/2³ = (2⁻¹•7+1)/2³ = ( 1/2 •7+1)/8 = (7/2 +1) /8 = 9/2•1/8 = 9/16