Ответ:39² − 750 = 1521 − 750 = 771.26² + 225 = 676 + 225 = 901.43² − 850 = 1849 − 850 = 999.32² + 400 = 1024 + 400 = 1424.21² − 100 = 441 − 100 = 341.47² − 1200 = 2209 − 1200 = 1009.30² + 500 = 900 + 500 = 1400.35² − 450 = 1225 − 450 = 775.