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 7: ( x -2013)^2014=1 ai làm dc câu này mk thưởng

Toán Lớp 7: ( x -2013)^2014=1
ai làm dc câu này mk thưởng

Comments ( 2 )

  1. ( x – 2013 )^2014 = 1
    ⇔ x – 2013 = ± 1
    ⇔ \(\left[ \begin{array}{l}x-2013=1\\x-2013=-1\end{array} \right.\) 
    ⇔ \(\left[ \begin{array}{l}x=2013+1\\x=-1+2013\end{array} \right.\) 
    ⇔ \(\left[ \begin{array}{l}x=2014\\x=2012\end{array} \right.\) 
    Vậy x = 2014 ; x = 2012

  2. ( x – 2013 )^{2014} = 1
    <=> $\left[\begin{matrix} x – 2013 = 1\\ x – 2013 = -1\end{matrix}\right.$        <=> $\left[\begin{matrix} x = 1 + 2013\\ x = -1 + 2013\end{matrix}\right.$           <=> $\left[\begin{matrix} x = 2014\\ x = 2012\end{matrix}\right.$
                                $\text{ Vậy x ∈ { 2012 ; 2014 } }$
     

Leave a reply

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