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Calculează:
a) [(5^5×5^20)÷5^22-5^2÷5]÷2^3=
b) [(7^11×7^23)÷7^33+7^0]÷2^3=
c) [2^3+(2^7×2^8×2^23)^2÷2^70]÷3^2=
d) [10^2-(6^30×6^21)^5÷6^253]÷2^5=
Dau coroană!!!​