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

Toán Lớp 7: $2^{3}$ + 3 . (-$\frac{1}{2}$)$^{6}$ – ($\frac{1}{2}$ )$^{2}$ . 4 + [ (-$2^{2}$ ) : $\frac{1}{2}$ ] : 8

Toán Lớp 7: $2^{3}$ + 3 . (-$\frac{1}{2}$)$^{6}$ – ($\frac{1}{2}$ )$^{2}$ . 4 + [ (-$2^{2}$ ) : $\frac{1}{2}$ ] : 8

Comments ( 2 )

  1. 2^3 + 3 . (-1/2)^6 – (1/2)^2 . 4 + [(-2^2) : 1/2] : 8
    = 8 + 3 . 1/64 – 1/4 . 4 + [-4 : 1/2] : 8
    = 8 + 3/64 – 1 + -8 : 8
    = 8 + 3/64 – 1 + -1
    = 515/64 – 2
    = 387/64
     

  2. Giải đáp:
     
    Lời giải và giải thích chi tiết:
    2^3 + 3 . (-1/2)^6 – (1/2)^2 . 4 + [(-2^2) : 1/2] : 8
    = 8 + 3 . 1/64 – 1/4 . 4 + [-4 : 1/2] : 8
    = 8 + 3/64 – 1 + -8 : 8 = 8 + 3/64 – 1 + -1
    = 515/64 – 2 = 387/64
    $\mathscr{X_{\textit{xin hay nhất}}}$

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

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