Answer:
=16x^8+8x^4y²+y^4
Explanation:
(4x^4+y²)²
=(4x^4+y²)(4x^4+y²)
4x^4(4x^4+y²)+y²(4x^4+y²)
16x^8+4x^4y²+4x^4y²+y^4
i hoped i helped
5.4m questions
7.0m answers