Is there an easy way to factorize this polynomial? [closed]

I was solving some math exercises and I got stumped on the following problem:

"Write the expression $x^6+x^4+x^2y^2+y^4-y^6$ as the product of three factors"

I don't know how to start this. Can anyone help me factorize it?

closed as off-topic by Morgan Rodgers, Leucippus, GNUSupporter 8964民主女神 地下教會, Xander Henderson, Trevor GunnMay 9 '18 at 3:51

This question appears to be off-topic. The users who voted to close gave this specific reason:

• "This question is missing context or other details: Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – Morgan Rodgers, Leucippus, GNUSupporter 8964民主女神 地下教會, Xander Henderson, Trevor Gunn
If this question can be reworded to fit the rules in the help center, please edit the question.

Denote: $x^2=a, y^2=b$. Then: $$a^3+a^2+ab+b^2-b^3=(a^3-b^3)+(a^2+ab+b^2)=\\ (a-b)(a^2+ab+b^2)+(a^2+ab+b^2)=\\ (a-b+1)(a^2+ab+b^2)=(a-b+1)((a+b)^2-ab).$$ Can you substitute $x,y$ back and finish?
Hint $1$: factorise $x^6-y^6$.
Hint $2$: \begin{eqnarray*} (x^2+\alpha xy +y^2)(x^2-\alpha xy +y^2)=\cdots \end{eqnarray*}