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2/5 :(1/2-1/3) la puterea 2 *(9/8) la puterea 2

Răspuns :

2/5:(1/2-1/3)²*(9/8)²=
2/5:(3/6-2/6)²*81/64=
2/5*36/1*81/64=
72/5*81/64=9/5*81/8=729/40=18,225