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Com fac (2/3) la puttered -2???

Răspuns :

(2/3)⁻²=(3/2)²=9/4

minus la putere inverseaza fractia

O zi buna!
 (2/3)⁻² = 1 / (2/3)² = 1 / (4/9) = 1 : 4/9 = 1*9/4 = 9/4 =2,25