Which algebraic identity would you use first to factorise the expression ?

MATHEMATICS · Single correct · AoPS · Mathematics · Special Factorizations · Special Factorizations

Problem

Which algebraic identity would you use first to factorise the expression

x^3 + 8

? (a)

x^3 + y^3 = (x + y)(x^2 + xy + y^2)

(b)

x^3 - y^3 = (x - y)(x^2 + xy + y^2)

(c)

x^3 + y^3 = (x + y)(x^2 - xy + y^2)

(d)

(x + y)^3 = x^3 + 3x^2 y + 3xy^2 + y^3