(Y+1)(Y+3)-15因式分解,

因式分解:1/3x^2y-3y 因式分解(x+y)^3+2xy(1-xx-y)-1 用因式分解算!1)3y^2-5xy-y 因式分解1:(x^2-9y^2)-(x+3y) 因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)( (x-y)^3-(x-y)^4 因式分解 (x-y)^2-(x-y)^3因式分解 (x+y)^2-3(x-y)因式分解 3x-y^2 因式分解 xy+x+y+1因式分解 1-x-y+xy 因式分解 因式分解xy-x-y+1