Phân tích các đa thức sau thành nhân tử:
a) \(\left(x+y\right)^7-x^7-y^7\)
b) \(\left(x-y\right)^7+\left(y-z\right)^7+\left(z-x\right)^7\)
c) \(x^3+y^3-6xy+8\)
d) \(x^3+y^3+3x^2+3y^2+6a+6y+8\)
e) \(a^3+ac^2-abc+b^2c+b^3\)
g) \(8\left(x+y+z\right)^3-\left(x+y\right)^3-\left(y+z\right)^3-\left(z+x\right)^3\)
help me
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