Bài 2 A) 938.638+36.38+938 B)2mũ3 – 32 :21 C)4.84.2mũ5 D)2021-{4-[35-(12.2-17)mũ2]-2029 Ai g

1 bình luận về “Bài 2 A) 938.638+36.38+938 B)2mũ3 – 32 :21 C)4.84.2mũ5 D)2021-{4-[35-(12.2-17)mũ2]-2029 Ai g”

1. a) 938 . 638 + 36 . 38 + 938

   = 938(638+1) + 1368

   = 938 . 639 + 1368

   = 599382 + 1368

   = 600750

   ——————————

   b) 2^3 – 32 : 21

   = 8 – 32 : 21

   = 8 – 1 11/21

   = 6 10/21

   ———————————

   c) 4 . 84 . 2^5

   = 4 . 32 . 84

   = 128 . 84

   = 10752

   ————————————–

   d) 2021 – {4 – [35-(12.2-17)^2]-2029}

   = 2021 – [4 – (35 – 7^2)-2029]

   = 2021 – (4 + 14 – 2029)

   = 2021 + 2011

   = 4032

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