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

Toán Lớp 7: thực hiện phép tính 25.( -1/5) ^3 + 1/5 – 2 ( -1/2 ) ^2 – 1/2

Toán Lớp 7: thực hiện phép tính
25.( -1/5) ^3 + 1/5 – 2 ( -1/2 ) ^2 – 1/2

Comments ( 2 )

  1. ~ Bạn tham khảo ~
    25 . (-1/5)^3 + 1/5 – 2 (-1/2)^2 -1/2
    = 25 . (-1/125) + 1/5 – 2 . 1/4 – 1/2
    = -1/5 + 1/5 – 1/2 – 1/2
    = 0 – 1/2 – 1/2
    = -1/2 – 1/2
    = -1
    $#Vịt vàng$

  2. 25 . (-1/5)^3 + 1/5 – 2 . (-1/2)^2 – 1/2
    = 25 . (-1)/125 + 1/5 – 2 . 1/4 – 1/2
    = -1/5 + 1/5 – 1/2 – 1/2
    = -1/2 – 1/2 = -1
     

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