a: x^3+8=(x+2)(x^2-2x+4)
b: =(3x+1)(9x^2-3x+1)
c: =(x+3)(x^2-3x+9)
d: =(4x-3y)(16x^2+24xy+9y^2)
\(a.x^3+8=\left(x+2\right)\left(x^2-2x+4\right)\)
\(b.27x^3+1=\left(3x+1\right)\left(9x-3x+1\right)\)
\(c.x^3+27=\left(x+3\right)\left(x^2-3x+9\right)\)
\(d.64x^3-27y^3=\left(4x-3y\right)\left(16x^2+12xy+9y^2\right)\)