What is the factored form of x^12y^18 +1?
(x¹y0-1)(x8y¹²-x²y +1)
(x²y + 1)(x0y¹²-x²y +1)
(xªy6-1)(x³y¹²+xªy6-1)
(x²y + 1)(x²y+1)(x^²+1)