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

Toán Lớp 6: 2 mũ x cộng 4 nhân 2 mũ x bằng 5

Toán Lớp 6: 2 mũ x cộng 4 nhân 2 mũ x bằng 5

Comments ( 2 )

  1. 2^x+4.2^x=5
    2^x(1+4)=5
    2^x.5=5
    2^x=5:5
    2^x=1
    2^x=2^0
    =>x=0
    $Vậy$ x=0
     

  2. 2^x + 4 × 2^x = 5
    2^x × ( 4 + 1 ) = 5
    2^x × 5 = 5
           2^x = 5 : 5
           2^x = 1
    => x = 0
    #dtkc

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

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