Объяснение:
а) 14t*(1.5t² - 2d) - 8t*(t² - 1.5d) = 21t³ - 28td - 8t³ + 12td = 13t³ - 16td
б) = 3m² - m + 6m - 2 - 2m² + 2m - 6m + 6 = m² + m + 4
Объяснение:
а) 14t*(1.5t² - 2d) - 8t*(t² - 1.5d) = 21t³ - 28td - 8t³ + 12td = 13t³ - 16td
б) = 3m² - m + 6m - 2 - 2m² + 2m - 6m + 6 = m² + m + 4