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

Toán Lớp 8: giải dùm mk ạ (-12x^4y+4x^3)/(-4x^)=?

Toán Lớp 8: giải dùm mk ạ
(-12x^4y+4x^3)/(-4x^)=?

Comments ( 2 )

  1. Lời giải:
    (-12x^(4)y+4x^3)/(-4x^2)
    =[-4x^(3)(3xy-1)]/(-4x^2)
    =x(3xy-1)
    =3x^(2)y-x
     

  2. (-12x^4y + 4x^3)/(-4x^2)
    = [-4x^2(3x^2y – x)]/(-4x^2)
    = 3x^2y – x
    = x(3xy – 1)

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