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

Toán Lớp 8: a, $x^{3}$ + 8 $y^{3}$ b, $x^{2}$ – 6 $x$ + 8 c, $x^{8}$ + 16

Toán Lớp 8: a, $x^{3}$ + 8 $y^{3}$
b, $x^{2}$ – 6 $x$ + 8
c, $x^{8}$ + 16

Comments ( 1 )

  1. a, x^3 + (2y)^3
    = (x-2y)(x^2 + 2xy + (2y)^2)
    b, (x-3)^2
    c, (x +2)^8
    xin 5 sao
     

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