Question 216109
8y^8-8z^8
8(y^8-z^8)
8(y^4+z^4)(y^4-z^4)
8(y^4+z^4)(y^2+z^2)(y^2-z^2)
8(y^4+z^4)(y^2+z^2)(y+z)(y-z) ans.