a) 47 – [(45. 2mũ4 – 5 mũ 2. 12):14] b) 50 – [(20 – 2mũ3) : 2 + 34] c) 102 – [60 : (5mũ6 : 5mũ4 – 3. 5)] d) 50 – [(50 – 2mũ3. 5):2 + 3] e) 10 – [(82 – 48). 5 + (2mũ3. 10 + 8)] : 28 f) 8697 – [3mũ7 : 3mũ5 + 2(13 – 3)] g) 2011 + 5[300 – (17 – 7)mũ2] h) 695 – [200 + (11 – 1)mũ2] i) 129 – 5[29 – (6 – 1)mũ2] j) 2010 – 2000 : [486 – 2(7mũ2 – 6)] k) [(25 – 2mũ2. 3) + (3mũ2. 4 + 16)]: 5 l) 125(28 + 72) – 25(3mũ2. 4 + 64) m) 500 – {5[409 – (2mũ3. 3 – 21)mũ2] + 10mũ3} : 15

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