Thực hiện phép chia :
a) \(18\left(x-y\right)^{10}:2\left(x-y\right)^5\)
b) \(10\left(x-2\right)^{12}:\left(2-x\right)^{10}\)
c) \(-18\left(x-3\right)^5:2\left(3-x\right)^3\)
d) \(\left(x^2-6x+9\right):\left(x-3\right)\)
e) \(\left(x^2-x-2\right):\left(x+1\right)\)