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

Toán Lớp 8: (2x³ – 21x² + 67x – 60) : (x-5

Toán Lớp 8: (2x³ – 21x² + 67x – 60) : (x-5

Comments ( 2 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
    (2x^3-21x^2+67x-60):(x-5)
    =(2x^3-10x^2-11x^2+55x+12x-60):(x-5)
    =[2x^2(x-5)-11x(x-5)+12(x-5)]:(x-5)
    =[(x-5)(2x^2+11x+12)]:(x-5)
    =2x^2+11x+12.

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

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