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Answer:
4. 12c(3a^5b - 1)
Step-by-step explanation:
Greatest common factor of 36 and 12: 12
There are variables a^5b on left term but not on right term, so there is no common factor of a or b.
Greatest common factor of c and c: c
Common factor: 12c
36a^5bc / 12c = 3a^5b
-12c / 12c = -1
Answer: 36a^5bc - 12c = 12c(3a^5b - 1)