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: b) (x-2)(x2 +2x+4)-x(x-2)(x+2)+4x cảm ơn ạ

Toán Lớp 8: b) (x-2)(x2 +2x+4)-x(x-2)(x+2)+4x
cảm ơn ạ

Comments ( 2 )

  1. #Sad
    b,
    (x-2)(x^2+2x+4)-x(x-2)(x+2)+4x
    = x^3-8-x(x^2-4)+4x
    = x^3-8-x^3+4x+4x
    = 8x-8
     

  2. (x-2)(x²+2x+4)-x(x-2)(x+2)+4x
    =x³-8-x(x²-4)+4x
    =x³-8-x³+4x+4x
    =8x-8
    #NoCopy

Leave a reply

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

About Tâm