1a) (3a - 4ax + 2) - (11a - 14ax) = 3a - 4ax + 2 - 11a + 14ax = 10ax - 8a + 2
б) 3y²(y³ + 1) = 3y² *y³ + 3y² * 1 = 3y⁵ + 3y²
2a) 10ab - 15b² = 5b(2a - 3b)
б) 18a³ + 6a² = 6a²(3a + 1)
3) 9x - 6(x - 1) = 5(x + 2)
9x - 6x + 6 = 5x + 10
3x - 5x = 10 - 6
- 2x = 4
x = - 2