4x-20 12x²y-3xy²+18x²y³ 3y(y.2x)+6y(2x-y) 7x(x-1)+5y(x-1) 2(x-1)-y(1-x)

4x-20
12x²y-3xy²+18x²y³
3y(y.2x)+6y(2x-y)
7x(x-1)+5y(x-1)
2(x-1)-y(1-x)

2 bình luận về “4x-20 12x²y-3xy²+18x²y³ 3y(y.2x)+6y(2x-y) 7x(x-1)+5y(x-1) 2(x-1)-y(1-x)”

  1. a,
    4x-20
    = 4(x-5)
    b, 
    12x^2 y -3xy^2 +18x^2 y^3
    =  3xy(4x-y+6xy^2)
    c, 
    3y(y.2x)+6y(2x-y)
    = 3y^2 . 6xy +6y(2x-y)
    = 6y(3xy^2 +2x-y)
    d, 
    7x(x-1)+5y(x-1)
    =(x-1)(7x+5y)
    e,
    2(x-1)-y(1-x)
    = 2(x-1)+y(x-1)
    =(x-1)(2+y)

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