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

Toán Lớp 8: Giải phương trình : `(x^2-5x+2)/(2x+1)+2=-(x^2-4x+1)/(x+1)`

Toán Lớp 8: Giải phương trình : (x^2-5x+2)/(2x+1)+2=-(x^2-4x+1)/(x+1)

Comments ( 1 )

  1. Giải đáp:
    ⇔$\frac{x²-5x+2}{2x+1}$ +2=-$\frac{x²-4x+1}{x+1}$
    <=>$\frac{x²-5x+2}{2x+1}$ (x+1)(2x+1)+2(x+1)(2x+1)=-$\frac{x²-4x+1}{x+1}$ (x+1)(2x+1)
    <=> (x²-5x+2)(x+1)+2(x+1)(2x+1)=-(x²-4x+1)(2x+1)
    <=>x ≈ -0,68944…
    Chúc bạn thi tốt!!!
     

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

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