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 7: 2 mũ x+1-2 mũ x =64 2 mũ x+1-2 mũ x =64

Toán Lớp 7: 2 mũ x+1-2 mũ x =64
2 mũ x+1-2 mũ x =64

Comments ( 2 )

  1. $2^{x+1}$ $-2^{x}=64$
    $⇔2^x.1$ $-2^{x}=2^6$ 
    $⇒2^x(2.1)=2^6$
    $⇔2^x.1=2^6$
    $⇔2^x=2^6$
    $⇔x=6$
    Vậy $x=6$
     

  2. 2^(x + 1) – 2^x = 64
    ⇒ 2^x. 2 – 2^x = 64
    ⇒ 2^x. (2 – 1) = 64
    ⇒ 2^x = 2^6
    ⇒ x = 6

Leave a reply

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

About Ngọc Sa