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

Toán Lớp 7: Tìm x: ($\frac{-2}{3}$)$^{2}$ . x = ($\frac{-2}{3}$)$^{5}$

Toán Lớp 7: Tìm x:
($\frac{-2}{3}$)$^{2}$ . x = ($\frac{-2}{3}$)$^{5}$

Comments ( 2 )

  1. (-2/3)^2 . x = (-2/3)^5
    => x= (-2/3)^5 : (-2/3)^2
    => x= (-2/3)^3
    => x= (-2)^3/3^3
    => x = -8/27
    Vậy x = -8/27
     

  2. ((-2)/3)^2 . x=((-2)/3)^5
    <=>x=((-2)/3)^5:((-2)/3)^2
    <=>x=((-2)/3)^(5-2)
    <=>x=((-2)/3)^3
    <=>x=((-2)^3)/3^3
    <=>x=(-8)/27
    Vậy x=(-8)/27
     

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