(x²ⁿ+2xⁿyⁿ+y²ⁿ)(x²ⁿ-2xⁿyⁿ+y²ⁿ)
If you look closely, you'll notice that it can also be expressed in the form of:
[(xⁿ)²+2(xⁿ)(yⁿ)+(yⁿ)²]](xⁿ)²-2(xⁿ)(yⁿ)+(yⁿ)²]
=[(xⁿ + yⁿ)²][(xⁿ - yⁿ)²]
=(xⁿ + yⁿ)(xⁿ + yⁿ)(xⁿ - yⁿ)(xⁿ - yⁿ)
=[(xⁿ + yⁿ)(xⁿ - yⁿ)][(xⁿ + yⁿ)(xⁿ - yⁿ)]
=(x²ⁿ - y²ⁿ)(x²ⁿ - y²ⁿ)
=(x²ⁿ - y²ⁿ)²
= [tex] x^{4n} -2 x^{2n} y^{2n} + y^{4n} [/tex]
but of course, if you prefer manual multiplication... well, no one's stopping you