1. с^2-d^2
2. 49-x^2
3. x^2-y^2
4. a^2+2ax+x^2
5. y^2-2xy+x^2
6. 2x^2 y+4xy^2
7. x^2n-x^3n
8. y^(n+1) y^n

repoli433    3   11.04.2020 14:27    1