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

Toán Lớp 8: (4$x^{3}$$y^{3}$-6$x^{4}$$y^{2}$):2$x^{}$$y^{2}$

Toán Lớp 8: (4$x^{3}$$y^{3}$-6$x^{4}$$y^{2}$):2$x^{}$$y^{2}$

Comments ( 2 )

  1. (4x^3 y^3 -6x^4 y^2):2xy^2
    =(4x^3 y^3 :2xy^2)-(6x^4 y^2 :2xy^2)
    =2x^2 y-3x^3
    $@Masonn$
     

  2. (4x^3y^3-6x^4y^2):2xy^2
    =4x^3y^3:2xy^2-6x^4y^2:2xy^2
    =(4:2).(x^3:x).(y^3:y^2)-(6:2).(x^4:x).(y^2:y^2)
    =2x^2y-3x^3.

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