Ответ:

  1. \(6^2=36\);
  2. \(11^2=121\);
  3. \(29^2=841\);
  4. \(85^2=7225\);
  5. \(37^2=1369\);
  6. \(6.4^2=40.96\);
  7. \(14.2^2=201.64\);
  8. \(573^2=328329\);
  9. \(44^2-28^2=1936-784=1152\);
  10. \((64+4)^2=68^2=4624\);
  11. \((7^2+8^2)\cdot10^2=(49+64)\cdot100=11300\);
  12. \(5\cdot8^2-3\cdot4^2=320-48=272\).

Ответ: 36; 121; 841; 7225; 1369; 40,96; 201,64; 328329; 1152; 4624; 11300; 272.