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

Toán Lớp 7: (x-3)^3-1=26.Giải giúp mình, mình cảm ơn

Toán Lớp 7: (x-3)^3-1=26.Giải giúp mình, mình cảm ơn

Comments ( 2 )

  1. $(x-3)^{3}-1=26$
    <=>$(x-3)^{3}=27$
    <=>$(x-3)^{3}=3^{3}$
    <=>$x-3=3$
    <=>$x=6$
    Vậy $x=6$

  2. ( x – 3 )^3 – 1 = 26
    <=> ( x – 3 )^3 = 26 + 1
    <=> ( x – 3 )^3 = 27
    <=> ( x – 3 )^3 = 3^3
    <=> x – 3 = 3
    <=> x = 3 + 3
    <=> x = 6
    Vậy , x = 6 .
     

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