(x+y)
3
−(x−y)
3
−6y(x+y)(x−y)

pls tell me the answer I need it now​

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y