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

Toán Lớp 8: làm tính chia (-3x^2y^3+4x^3y^4-x^4y^5):( -x^2y^3)

Toán Lớp 8: làm tính chia (-3x^2y^3+4x^3y^4-x^4y^5):( -x^2y^3)

Comments ( 2 )

  1. Giải đáp:
    (-3x^2y^3+4x^2y^4-x^4y^5):(-x^2y^3)
    = [-x^2y^3(3-4xy+x^2y^2)]:(-x^2y^3)
    = 3-4xy+x^2y^2

  2. $ ( – 3x^2y^3 + 4x^3y^4 – x^4y^5 ) : ( – x^2y^3 ) $
    $ =  – 3x^2y^3 : ( – x^2y^3 ) + 4x^3y^4 : ( – x^2y^3 ) – x^4y^5 : ( – x^2y^3 ) $
    $ = 3 – 4xy + x^2y^2 $

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

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