1) 8x^3 + 125 = x^2 - x - y^2 - y
2) -4x^5y^2 3xy^4 (3x^2y^3)^2= -4x^5y^2 3xy^4 9x^4y^6= -108x^10y^7
Therefore, the two expressions are simplified as shown above.
1) 8x^3 + 125 = x^2 - x - y^2 - y
2) -4x^5y^2 3xy^4 (3x^2y^3)^2
= -4x^5y^2 3xy^4 9x^4y^6
= -108x^10y^7
Therefore, the two expressions are simplified as shown above.