Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

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

Toán Lớp 6: Tìm x 9 mũ x-1=9 Cần gấp giúppppppppppppppppppppppppppppp

Toán Lớp 6: Tìm x
9 mũ x-1=9
Cần gấp giúppppppppppppppppppppppppppppp

Comments ( 2 )

  1.  9 mũ x-1=9
     (3^2)^x-1 = 3^2
     2(x-1)=2
     x-1=2:2
     x-1=1
     x=2

  2. 9^{x-1} = 9
    => 9^{x-1} = 9^1
    => x – 1 = 1
    => x = 1 + 1
    => x = 2
      $\text{ Vậy x = 2 }$
     

Leave a reply

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