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

Toán Lớp 8: 4 -x mũ 2 /x-3 +2x-2x-2/3-x+5-4x/x-3

Toán Lớp 8: 4 -x mũ 2 /x-3 +2x-2x-2/3-x+5-4x/x-3

Comments ( 2 )

  1. Mong cho lời giải hay nhất ❤️⭐️
    toan-lop-8-4-mu-2-3-2-2-2-3-5-4-3

  2. $\frac{4-x^{2}}{x-3}$ + $\frac{2x -2x^{2}}{x-3}$ + $\frac{5-4x}{x-3}$
    =$\frac{4-x^{2}}{x-3}$ + $\frac{-(2x -2x^{2})}{x-3}$ + $\frac{5-4x}{x-3}$
    =$\frac{4-x^{2}}{x-3}$ + $\frac{-2x -2x^{2}}{x-3}$ + $\frac{5-4x}{x-3}$
    =$\frac{4-x^{2}-2x + 2x^{2}+5-4x}{x-3}$
    = $\frac{x^{2}-6x+9}{x-3}$ 
    = $\frac{(x-3)^{2}}{x-3}$ 
    = x-3

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

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