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: 2^4x+3:2^2x+2=32 nhanh hộ em ạ

Toán Lớp 7: 2^4x+3:2^2x+2=32
nhanh hộ em ạ

Comments ( 2 )

  1. $@Mốc$
    2^{4x+3}:2^{2x+2}=32
    -> 2^{4x + 3 – 2x – 2} = 2^5
    -> 4x + 3 – 2x -2 = 5
    -> (4x-2x)+(3-2) = 5
    -> 2x + 1 = 5
    -> 2x = 5-1
    -> 2x = 4
    -> x = 4:2
    -> x = 2
     

  2. 2^{4x+3}:2^{2x+2}=32
    -> 2^[4x + 3} : 2^{2x + 2} = 2^5
    -> 2^{4x + 3 – (2x+2)} =2^5
    -> 2^{4x + 3 – 2x-2} =2^5
    -> 2^{(4x-2x)+(3-2)} = 2^5
    -> 2^{2x + 1} = 2^5
    -> 2x + 1 = 5
    -> 2x = 4
    -> x = 2

Leave a reply

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