Помогите. a^2b^2-2a^3b^4-3ab*2a^2bc-3c+abc разложить

Решите задачу:

$a {}^{2} b {}^{2} - 2a {}^{3} b {}^{4} - 3ab \times 2a {}^{2} bc - 3c + abc \\ a {}^{2} b {}^{2} - 2a {}^{3} b {}^{4} - 6a {}^{1} b {}^{1} a {}^{2} b {}^{1} c - 3c + abc \\ a {}^{2} b {}^{2} - 2a {}^{3} b {}^{4} - 6a {}^{1 + 2} b {}^{1 + 1} c - 3c + abc \\ a {}^{2} b {}^{2} - 2a {}^{3} b {}^{4} - 6a {}^{3} b {}^{2} c - 3c + abc$