Question

Помогите пожалуйстааа)))

Answer 1

$6a^{2}c - 3a^{2} + 2ac^{2} - ac = (6a^{2}c + 2ac^{2}) - (3a^{2} + ac) = 2ac(3a + c) - a(3a + c) = (3a + c)(2ac - a) = a(3a + c)(2c - 1)$