Ответ:

Использовано правило: \((u-v)^2=u^2-2uv+v^2\).

  1. \(a^2-2ab+b^2\)
  2. \(a^2-2ay+y^2\)
  3. \(d^2-2dx+x^2\)
  4. \(b^2-2bc+c^2\)
  5. \(m^2-6m+9\)
  6. \(49-14p+p^2\)
  7. \(4y^2-12y+9\)
  8. \(n^2-4an+4a^2\)
  9. \(9p^2-12px+4x^2\)
  10. \(x^2-2xy+y^2\)
  11. \(a^2-2a+1\)
  12. \(1-2n+n^2\)
  13. \(49y^2-14y+1\)
  14. \(100x^2-60x+9\)
  15. \(36x^2-24xy+4y^2\)
  16. \(0.04x^2-0.48x+1.44\)
  17. \(x^4-2x^2y+y^2\)
  18. \(100c^2-8c+0.16\)
  19. \(a^6-4a^3b^2+4b^4\)
  20. \(16x^4-24x^2c+9c^2\)