Разложите ** множители -4ac-12ad-2bc-6bd+c+3d

Question

Разложите на множители -4ac-12ad-2bc-6bd+c+3d

Answer 1

-4ac-12ad-2bc-6bd+c+3d= -4a(c+3d)-2b(c+3d)+(c+3d)=(c+3d)(1-4a-2b)