32) $$(2x^2y + 30n^2)(30n^2 - 2x^3y) = (30n^2 + 2x^2y)(30n^2 - 2x^3y) = (30n^2)^2 - (2x^2y)(2x^3y) = 900n^4 - 4x^5y^2$$
Ответ: $$900n^4 - 4x^5y^2$$