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

Toán Lớp 8: Phân tích đa thức thành nhân tử : 5x (2x -3y) – 15. (3y-2x)

Toán Lớp 8: Phân tích đa thức thành nhân tử : 5x (2x -3y) – 15. (3y-2x)

Comments ( 2 )

  1. 5x(2x-3y)-15(3y-2x)
    =5x(2x-3y)+15(2x-3y)
    =(2x-3y)(5x+15)
    =(2x-3y)5(x+3) 

  2. 5x(2x-3y)-15(3y-2x)
    = 5x(2x-3y)+15(2x-3y)
    = (5x+15)(2x-3y)
    = 5(x+3)(2x-3y)

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

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