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: `(3x-2)^2 – (2x-1)^2 =0` tìm x ạ!

Toán Lớp 8: (3x-2)^2 – (2x-1)^2 =0
tìm x ạ!

Comments ( 1 )

  1. (3x-2)^2-(2x+1)^2=0
    <=>(3x-2-2x-1).(3x-2+2x+1)=0
    <=>(x-3).(5x-1)=0
    \(⇔\left[ \begin{array}{l}x-3=0\\5x-1=0\end{array} \right.\)
    \(⇔\left[ \begin{array}{l}x=3\\5x=1\end{array} \right.\)
    \(⇔\left[ \begin{array}{l}x=3\\x=\frac{1}{5}\end{array} \right.\)
    Vậy x∈{3;1/5}
    $#chúc tus học tốt!!$
    #La

Leave a reply

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

About Kỳ Anh