\(\in,\in,\in,\notin,\in,\subset,\subset\)

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a, \(4x^3y^2-8x^2y^3+12x^3y^4=4x^2y^2\left(x-2y+3xy^2\right)\)

b, \(x\left(y-z\right)+2\left(z-y\right)=x\left(y-z\right)-2\left(y-z\right)=\left(x-2\right)\left(y-z\right)\)

c, \(\left(x+y\right)^2-2\left(x+y\right)=\left(x+y\right)\left(x+y-2\right)\)

d, \(x\left(2-x\right)^2-\left(2-x\right)^3=\left(2-x\right)^2\left[x-\left(2-x\right)\right]=\left(2x-2\right)\left(2-x\right)^2\)