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

Toán Lớp 6: (x – 1)^2=1 tìm x nkaaaaaaaaaaaaaaaaaa

Tháng Ba 31, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: (x – 1)^2=1
tìm x nkaaaaaaaaaaaaaaaaaa

Comments ( 2 )

  1. hiennhi98
    hiennhi98
    31 Tháng Ba, 2022 at 9:44 sáng
    Reply
    (x-1)^2=1
    =>(x-1)^2=(+-1)^2
    =>\(\left[ \begin{array}{l}x-1=1\\x-1=-1\end{array} \right.\) 
    =>\(\left[ \begin{array}{l}x=2\\x=0\end{array} \right.\) 
    Vậy x=2; x=0
     

  2. cobelolen
    cobelolen
    31 Tháng Ba, 2022 at 9:44 sáng
    Reply
    (x – 1)^2 = 1
    (x – 1)^2 = 1^2
    (x – 1) = +-1
    => \(\left[ \begin{array}{l}x – 1 = 1\\x – 1 = -1\end{array} \right.\)
    => \(\left[ \begin{array}{l}x = 1 + 1\\x = (-1) + 1\end{array} \right.\)
    => \(\left[ \begin{array}{l}x = 2\\x = 0\end{array} \right.\)
    Vậy: x = {2; 0}

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

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