Ответ:

Используем формулы \((a+b)^2=a^2+2ab+b^2\) и \((a-b)^2=a^2-2ab+b^2\).

  1. \(m^2+2mp+p^2\);
  2. \(u^2-2uv+v^2\);
  3. \(a^2+8a+16\);
  4. \(9-6c+c^2\);
  5. \(z^2+18z+81\);
  6. \(4x^2-4xh+h^2\);
  7. \(p^2+4pt+4t^2\);
  8. \(144-144n+36n^2\);
  9. \(25q^2+140q+196\);
  10. \(49k^2-280k+400\);
  11. \(4a^2+12ax+9x^2\);
  12. \(100b^2-180by+81y^2\);
  13. \(289c^2+102ce+9e^2\);
  14. \(36d^2-228dk+361k^2\);
  15. \(225s^2+60st+4t^2\);
  16. \(m^4-2m^2n+n^2\);
  17. \(25a^4+60a^2b+36b^2\);
  18. \(49b^4-42b^2c^2+9c^4\);
  19. \(36y^2+12x^3py+x^6p^2\);
  20. \(9n^8+30n^7+25n^6\).