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

Toán Lớp 6: Tìm x: `(x+80^2)-900=1000`

Toán Lớp 6: Tìm x: (x+80^2)-900=1000

Comments ( 2 )

  1.              (x+80^2)-900=1000
                 (x+6400)-900=1000
                 x+6400-900=1000
                 x+5500=1000
                 =>x=-4500
    Mik xin ctlhn nhé!!! 

  2. $( x + 80^2 ) – 900 = 1000$
    $=>   x + 80^2      = 1000 + 900$
    $=>   x + 80^2      = 1900$
    $=>   x + 6400      = 1900$
    $=>   x                   = 1900 – 6400$
    $=>   x                   = -4500$
     

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