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

Toán Lớp 8: Giúp vs mọi người ơi. Tìm x biết: (2x^4-3x^3+x^2) : (-x^2) + 4(x-1)^2 = 0

Toán Lớp 8: Giúp vs mọi người ơi.
Tìm x biết:
(2x^4-3x^3+x^2) : (-x^2) + 4(x-1)^2 = 0

Comments ( 1 )

  1. (2x^4-3x^3+x^2):(-x^2)+4(x-1)^2=0
    -2x^2+3x-1+4(x-1)^2=0
    -2x^2+3x-1+4(x^2-2x+1)=0
    -2x^2+3x-1+4x^2-8x+4=0
    (-2x^2+4x^2)+(3x-8x)+(-1+4)=0
    2x^2-5x+3=0
    2x^2-2x-3x+3=0
    2x.(x-1)-3.(x-1)=0
    (x-1).(2x-3)=0
    ⇒\(\left[ \begin{array}{l}x-1=0\\2x-3=0\end{array} \right.\)
    ⇒\(\left[ \begin{array}{l}x=1\\x=3/2\end{array} \right.\)

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