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: (5x-10).(6x+12)=0 tìm x thỏa mãn mog mng giải chi tiết giúp em ạ

Toán Lớp 6: (5x-10).(6x+12)=0 tìm x thỏa mãn mog mng giải chi tiết giúp em ạ

Comments ( 2 )

  1. (5x-10).(6x+12)=0
    5.(x-2).6.(x+2)=0
    (x-2)(x+2)=0
    \(\left[ \begin{array}{l}x-2=0\\x+2=0\end{array} \right.\)
    \(\left[ \begin{array}{l}x=2\\x=-2\end{array} \right.\)

  2. (5x-10).(6x+12)=0
    =>\(\left[ \begin{array}{l}5x-10=0\\6x+12=0\end{array} \right.\) 
    =>\(\left[ \begin{array}{l}5x=10\\6x=-12\end{array} \right.\) 
    =>\(\left[ \begin{array}{l}x=\dfrac{10}{5}\\x=-\dfrac{12}{6}\end{array} \right.\) 
    =>\(\left[ \begin{array}{l}x=2\\x=-2\end{array} \right.\) 
    Vậy x=2; x=-2
     

Leave a reply

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

About Tuyết