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

Toán Lớp 7: Tìm x: [(0,1) $^{4}$] $^{x}$=$(0,1)^{8}$

Toán Lớp 7: Tìm x:
[(0,1) $^{4}$] $^{x}$=$(0,1)^{8}$

Comments ( 2 )

  1. $[(0,1)$$^{4}$] $^{x}$=$(0,1)^{8}$
    $⇔$ $(0,1)^{4x}$=$(0,1)^8$
    $⇒$ $4x=8$
    $⇔$ $x$=$\frac{8}{4}$
    $⇒$ $x=2$
    Vậy $x=2$

  2. [(0,1)^4]^x=(0,1)^8
    =>[(0,1)^4]^x=(0,1)^(4.2)
    =>[(0,1)^4]^x=[(0,1)^4]^2
    =>x=2
    Vậy x=2

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