Д)67 степень 2+2*67*45+2015 е) -3600-2*720-144

Question

Д)67 степень 2+2*67*45+2015 е) -3600-2*720-144

Answer 1

Д) 67² + 2*67*45 + 45² - 45² + 2015 = (67 + 45)² - 45² + 2015 = (67 + 45)² - 2025 +2015 = (67 + 45)² - 10 = 112² - 10 = 12 544 - 10 = 12 534
е) - (3600 + 2*720 + 144) = - (60² + 2*60*12 + 12²) = - (60 + 12)² = - 72² = - 5.184