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

Toán Lớp 6: TÌM N : a) 5^4 = n b) n^3= 125 c) n^3=125 d) 11^n= 1331

Toán Lớp 6: TÌM N : a) 5^4 = n b) n^3= 125 c) n^3=125 d) 11^n= 1331

Comments ( 2 )

  1. $#AS$
    a) 5^4 = n => 5^4 = 625
    => n = 625
    b) n^3 = 125 => 125 = 5^3
    => n = 5
    c) Tương tự như câu b
    d) 11^n = 1331 => 1331 = 11^3
    => n = 3

  2. a)5^4 =n
    ⇒5.5.5.5=n
    ⇒n=625
    Vậy n=625
    b) n^3 = 125
    ⇒n^3 = 5^3
    ⇒n=5
    Vậy n=5
    c) Như ý b
    d) 11^n = 1331
    ⇒11^n = 11^3
    ⇒n=3
    Vậy n=3

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