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

Toán Lớp 7: ($\frac{-2}{5}$ + $\frac{1}{2}$)$^{2}$ =?

Toán Lớp 7: ($\frac{-2}{5}$ + $\frac{1}{2}$)$^{2}$ =?

Comments ( 2 )

  1. (\frac{-2}{5}+\frac{1}{2})^2
    =(\frac{-4}{10}+\frac{5}{10})^2
    =(\frac{1}{10})^2
    =1/100

  2. $\\$
    Giải đáp + giải thích các bước giải :
    $(\dfrac{-2}{5}+\dfrac{1}{2})^2\\=(\dfrac{-4}{10}+\dfrac{5}{10})^2\\=(\dfrac{1}{10})^2\\=\dfrac{1}{100}$

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

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