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

Toán Lớp 6: Thực hiện phép tính : 527 + { [2 x (2 x 2^3 + 3^2 + 4^2 – 5^2) + 678^0] : 33}

Toán Lớp 6: Thực hiện phép tính :
527 + { [2 x (2 x 2^3 + 3^2 + 4^2 – 5^2) + 678^0] : 33}

Comments ( 2 )

  1. 527+{[2xx(2xx2^3+3^2+4^2-5^2)+678^0]:33}
    = 527+{[2xx(2xx8+9+16-25)+1]:33}
    = 527+{[2xx(16+9+16-25)+1]:33}
    = 527+{[2xx16+1]:33}
    = 527+{33:33}
    = 527+1
    = 528
     

  2. 527 + { [2 x (2 x $2^{3}$  + $3^{2}$  +$4^{2}$   – $5^{2}$ ) + 678^0] : 33}
     =527+{[2×(2×6+9+16-25)+1]÷33}
    =527+{[2×(12+9+16-25)+1]÷33}
    =527+{[2×(21+16-25)+1]÷33}
    =527+{[2×(37-25)+1]÷33}
    =527+{[2×12+1]÷33}
    =527+{[24+1]÷33}
    =527+{25÷33}
    =527+$\frac{25}{33}$ 
    = $\frac{17416}{33}$ 

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

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