<span>решите неравенство
-7+4х>5
4x > 5+7 = 12
x > 12/4 = 3
x > 3</span>
F(x)=-2cosx
f(0)=-2cos0=-2*1=-2
1. 18а² - 27ab + 14 ac - 21bc = 9а(2а - 3b) + 7c(2a - 3b) = (9a + 7c)(2a - 3b)
2. 6х⁴ - 24х³ = 6х³(х - 4)
3. 4у(6х² - 5у) + 7х (5у - 6х²) - (6х² - 5у) = 4у(6х² - 5у) - 7х(6х² - 5у) - (6х² - 5у) = (4у - 7х - 1)(6х² - 5у)