Answer: 10c^2 - 37c + 30
Step-by-step explanation:
Expand terms (binomial expansion) - Multiply the terms in the first parentheses by each term in the second parentheses
(5-2c)(6-5c)
= 30 - 25c - 12c + 10c^2
= 10c^2 - 37c + 30
