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

Toán Lớp 8: 4x ^{ 4 } -24x ^{ 3 } +36x ^{2}

Toán Lớp 8: 4x ^{ 4 } -24x ^{ 3 } +36x ^{2}

Comments ( 2 )

  1. $#Dứa$
    $4x^{4}$ – $24x^{3}$ + $36x^{2}$
    ⇔ $4^{2}$ ($x^{2}$$ – 6x + 9 )$
    ⇔ $4x^{2}$ $(x-3)^{2}$ 

  2. $4x^4-24x^3+36x^2$
    $=4x^2(x^2-6x+9)$
    $=4x^2(x-3)^2$

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