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: √11/9:1,44-7/9:1,44 căn bao quát luôn nha

Toán Lớp 9: √11/9:1,44-7/9:1,44
căn bao quát luôn nha

Comments ( 2 )

  1. sqrt(11/9 : 1,44 – 7/9 : 1,44)
    =sqrt(11/9 : 36/25 – 7/9 : 36/25 )
    =sqrt(11/9 . 25/36 – 7/9 . 25/36)
    =sqrt(25/36 . (11/9-7/9))
    =sqrt(25/36 . 4/9)
    =sqrt(25/81)=5/9

  2. √(11)/9:(36)/(25)-7/9:(36)/(25)
    =√(11)/9.(25)/(36)-7/9.(25)/(36)
    =√(25)/(36)((11)/9-7/9)
    =√(25)/(36).4/9
    =√(25)/(81)
    =5/9

Leave a reply

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