16;
a) 6x^2(3y-2x)
b)2xy(x-3y)
c)2xy(4y-x)
.CHẤM ĐIỂM NHA.

Bài 16:
a) 18.x^2.y - 12.x^3 = 6.x^2 . (3y - 2x)
b) 4.x^2.y - 6xy^2 = 2xy(2x - 3y)
c) 8xy^2 - 2.x^2.y = 2xy(4y - x)

Bài 17:
a) 3xy^2 + 6xyz = 3xy(y + z)
b) 8xy^2 - 2.x^2.y = 2xy(4y - x)4
c) -18.x^2.y - 12.x^3 = -6.x^2 . (3y + 2x)

Bài 18:
a) 2.x^2 + 5.x^3 + x^2.y = x^2 . (2 + 5x + y)
b) 4.x^2.y - 8xy^2 + 18.x^2.y^2 = 2xy(2x - 4y + 9xy)
c) -3.x^2.y + 6.x^2.y^2 - 9xy^2 = -3xy(x - 2xy + 3y)