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

Toán Lớp 8: PTĐTTNT: 15 $x^{2}$ – $\text{6xy}$

Toán Lớp 8: PTĐTTNT: 15 $x^{2}$ – $\text{6xy}$

Comments ( 2 )

  1. 15x²-6xy
    =3x.5x-3x.2y
    =3x(5x-2y)

  2. 15x^2 -6xy
    = 3x.5x – 3x.2y
    = 3x(5x-2y)
    Phương pháp: Đặt nhân tử chung.

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

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