(2 power of Y) + (3 power of Y) - 5 power of 2Y · y How? Be more specific

(2 power of Y) + (3 power of Y) - 5 power of 2Y · y How? Be more specific

y^2+(y^3)^2-2y*y^5
=y^2+y^6-2y^6
=y^2-y^6
=y^2(1-y^4)
=y^2(1+y^2)(1+y)(1-y)