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

Toán Lớp 7: Tìm x biết rằng: ((x-18)^2)^5) = (x^2-x-18)^10

Toán Lớp 7: Tìm x biết rằng:
((x-18)^2)^5) = (x^2-x-18)^10

Comments ( 1 )

  1.      ((x – 18)²)^5) = (x² – x – 18)^10
    ⇔ (x – 18)^10 = (x² – x – 18)^10
    ⇔ x – 18 = x² – x – 18
    ⇔ 2x = x²
    ⇔ 2x = x.x
    +) x = 2
    +) x = 0
     

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