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

Toán Lớp 9: khai triển : `root{3}{x+8}-root{3}{8}`

Toán Lớp 9: khai triển : root{3}{x+8}-root{3}{8}

Comments ( 2 )

  1. Giải đáp:
    $\sqrt[3]{x+8}$ – 2
    Lời giải và giải thích chi tiết:
    Khai triển:
    $\sqrt[3]{x+8}$ – $\sqrt[3]{8}$
    ⇔ $\sqrt[3]{x+8}$ – $\sqrt[3]{2^3}$
    ⇔ $\sqrt[3]{x+8}$ – 2^1
    ⇔ $\sqrt[3]{x+8}$ – 2

  2. $\sqrt[3]{x-8}$ -$\sqrt[3]{8}$
    = $\sqrt[3]{x-8}$ – $\sqrt[3]{2^3}$
    = $\sqrt[3]{x-8}$ – $2^{1}$
    = $\sqrt[3]{x-8}$ -2
     
     

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

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