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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: 6 mủ 2 . 2 – 40 [20-(33-29)] mủ 2

Toán Lớp 6: 6 mủ 2 . 2 – 40 [20-(33-29)] mủ 2

Comments ( 2 )

  1. 6^{2} . 2 – 40[20 -(33 – 29)]^{2}
    = 6^{2} . 2 – 40[20 – 4]^{2}
    = 6^{2} . 2 – 40 . 16^{2}
    = 36 . 2 – 40 . 256
    = 72 – 10240
    = – 10168

  2.   6². 2 – 40. [20-(33-29)]²
    =36.2-40.[20-4]²
    =36.2-40.16²
    =36.2-40.256
    =73-10240
    =73+(-10240)
    =[-(10240-73)]
    =-10167
     

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222-9+11+12:2*14+14 = ? ( )