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(4. Să se verifice egalităţile: a) 2² +2³ = 12 c) 3-5° +30-5=23 e) 2-13+2² (50+1¹2 +032)-(23-22)] = 70 f) 10-(22+2-2-13³-3-(4¹-4°)])=760 b) 20-2¹-2²-23=64 d) 2-(2-5-2-3)³(2-3²-2-23524 g) [(25-8)³:165-(10³-995)0]:24 = 1 h) (5²-5³-54)2: (5³) 5-(117)²: (11²3)²: (117-110-11)=4(AJUTOR)​