а) 12x^2y - 18xy^2 = 6xy(2x - 3y)
б) 15a^4b^3 - 25a^3b^4 = 5a^3b^3(3a - 5b)
в) mn - 3m + 2n - 6 = m(n - 3) + 2(n - 3) = (m + 2)(n - 3)
г) x^2 - xy - 2y^2 = (x + y)(x - 2y)
а) 12x^2y - 18xy^2 = 6xy(2x - 3y)
б) 15a^4b^3 - 25a^3b^4 = 5a^3b^3(3a - 5b)
в) mn - 3m + 2n - 6 = m(n - 3) + 2(n - 3) = (m + 2)(n - 3)
г) x^2 - xy - 2y^2 = (x + y)(x - 2y)