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 8: Tìm X bt; e/ (x+2)^2-(x-2)(x+2)=0 giúp!!!!!!!!!!!!!

Toán Lớp 8: Tìm X bt;
e/ (x+2)^2-(x-2)(x+2)=0
giúp!!!!!!!!!!!!!

Comments ( 2 )

  1. Giải đáp + Lời giải và giải thích chi tiết:

     e)

    (x+2)^2 -(x-2)(x+2)=0

    ⇔ (x+2)(x+2-x+2)=0

    ⇔4(x+2)=0

    ⇔ x+2=0

    ⇔ x=0-2

    ⇔ x=-2

    Vậy x=-2

     

  2. (x+2)^2-(x-2)(x+2)=0

    (x+2)(x+2)-(x-2)(x+2)=0

    (x+2)[(x+2)-(x-2)]=0

    (x+2).4=0

    x+2=0

    x=-2

    \text{Vậy x = -2}

Leave a reply

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