Question

9-x^2+2xy-y^2,
a^4b^4+37a^2b^2+300,
x^2+43xy+390y^2,
380-x-x^2,
m^2-22mn+105n^2,
5x^5-10a^2x^3-15a^3x^3,
2x^2y^3-6x^2y^2+xy^3,
(2a+b)^3-27(a+2b)^3

Answer 1

The answer of your question is 2431573674216