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

Toán Lớp 6: 500- { 5[409- (2^3 . 3 – 21) ^2 ] -1724 } giúp mk với mk cần gấpp

Toán Lớp 6: 500- { 5[409- (2^3 . 3 – 21) ^2 ] -1724 }
giúp mk với mk cần gấpp

Comments ( 2 )

  1. Giải đáp: 
    500- { 5[409- (2^3 . 3 – 21) ^2 ] -1724 }
    = 500- {5.[409 – (8.3-21)^2]-1724}
    =500-{5.[409-(24-21)^2]-1724}
    =500-{5.[409-3^2] -1724}
    =500-{5.406^2-1724}
    =500-{5.164836-1724}
    =500-{824180-1724}
    =500-822456
    =-821956
    (Bạn cho mũ 2 trong ngoặc vuông nên so to qua)

  2. 500 – { 5 . [ 409 – ( 2^3 . 3 – 21 )^2 ] – 1724 }
    = 500 – { 5 . [ 409 – ( 8 . 3 – 21 )^2 ] – 1724 }
    =  500 – { 5 . [ 409 – ( 24 – 21 )^2 ] – 1724 }
    = 500 – { 5 . [ 409 – 3^2 ] – 1724 }
    = 500 – { 5 . [ 409 – 9 ] – 1724 }
    = 500 – { 5 . 400 – 1724 }
    = 500 – { 2000 – 1724 }
    = 500 – 276
    = 224
     

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