Expand y2y24 Choose the correct binomial expansion 1Y8 4 Y

Expand. (y-2+y2)^4 Choose the correct binomial expansion. 1/Y^8 + 4 + Y^8 1/Y^8 + 4/Y^4 + 6 + 4Y^4 + Y^8 1/Y^8 + 1/Y^4 + 1 + Y^4 + Y^8 1/Y^8 + Y^8

( y^-2 +y^2)^4

( y^-2 +y^2)^2*( y^-2 +y^2)^2

Expand using the formula : (a+b)^2 = a^2 +b^2 + 2a*b

( y^-4 +y^4 +2)(y^-4 +y^4 +2)

y^-8 +1 +2y^-4 +1 +y^8 +2y^4 +2y^-4 +2y^4 +4

1/y^8 +6 +4/y^4 +y^8 +4y^4

Option B