Question 855646
{{{216x^3+343y^6=6^3*x^3+7^3*y^6=(6x)^3+(7y^2)^3=(6x+7y^2)((6x)^2-(6x)(7y^2)+(7y^2)^2)=(6x+7y^2)(36x^2-42xy^2+49y^4)}}}