Ответ:√1225 + √900 = 35 + 30 = 65.78² + √2304 = 6084 + 48 = 6132.47² + 21² + √625 = 2209 + 441 + 25 = 2675.423² − 21² − √10404 = 178929 − 441 − 102 = 178386.