a, \(x^3+6x^2+12x+8=\left(x+2\right)^3\)
b, \(x^3-3x^2+3x-1=\left(x-1\right)^3\)
c, \(1-9x+27x^2-27x^3=\left(1-3x\right)^3\)
d, \(x^3+\dfrac{3}{2}x^2+\dfrac{3}{4}x+\dfrac{1}{8}=\left(x+\dfrac{1}{2}\right)^3\)
e, \(27x^3-54x^2y+36xy^2-8y^3=\left(3x-2y\right)^3\)