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

Toán Lớp 9: tìm x : $(3-4x)^{3}$ = $-(3x+2)^{2}$

Toán Lớp 9: tìm x : $(3-4x)^{3}$ = $-(3x+2)^{2}$

Comments ( 1 )

  1. (3-4x)^3=-(3x+2)^2
    ⇔27-108x+144x^2-64x^3+9x^2+12x+4=0
    ⇔64x^3+153x^2-96x+31=0
    ⇒ Xem lại đề.
     

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