Ответ:
a = 3c b = 12c³ x = 5c³ + 2 y = 7c² - c + 15 z = 5c - 1
3x - ay + bz = 3 * (5c³ + 2) - 3c * (7c² - c + 15) + 12c³ * (5c - 1) =
= 15c³ + 6 - 21c³ + 3c² - 45c + 60c⁴ - 12c³ = 60c⁴ - 18c³ + 3c² - 45c + 6
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Ответ:
a = 3c b = 12c³ x = 5c³ + 2 y = 7c² - c + 15 z = 5c - 1
3x - ay + bz = 3 * (5c³ + 2) - 3c * (7c² - c + 15) + 12c³ * (5c - 1) =
= 15c³ + 6 - 21c³ + 3c² - 45c + 60c⁴ - 12c³ = 60c⁴ - 18c³ + 3c² - 45c + 6