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 6: (2x-10).(5-x)=0 nhanhhhh nha mnnn

Toán Lớp 6: (2x-10).(5-x)=0
nhanhhhh nha mnnn

Comments ( 2 )

  1. (2x-10).(5-x)=0
    Th1 2x-10=0
    2x=0+10
    2x=10
    x=10:2
    x=5
    Th2 5-x=0
    x=5-0
    x=5
    Vậy x nhận 1 giá trị là 5
     

  2. Giải đáp:
     $(2x-10).(5-x)=0$
    $⇔ $ \(\left[ \begin{array}{l}2x-10=0\\5-x=0\end{array} \right.\) $⇔$  \(\left[ \begin{array}{l}2x=10\\x=5\end{array} \right.\) $⇔$  \(\left[ \begin{array}{l}x=5\\x=5\end{array} \right.\) 
    $⇔ x=5$
    $vậy$ $x=5$
     

Leave a reply

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