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 9: phân tích thành nhân tử: 4y-2y^2-2zy+z^2

Toán Lớp 9: phân tích thành nhân tử: 4y-2y^2-2zy+z^2

Comments ( 2 )

  1. 4y-2y²-2zy+z²
    =2y(2-y)-z(2y+z)
    =(2-z)(2-y)(2y+z)

  2. 4y – 2y^2 – 2zy + z^2
    = ( 4y – 2zy ) – ( 2y^2 – z^2 )
    = 2y ( 2y – z ) – ( 2y – z )( 2y + z )
    = ( 2y – z )[ 2y – ( 2y – z )]
    = ( 2y – z ) ( 2y – 2y + z )
    = ( 2y – z ). z  
     

Leave a reply

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

About Khanh