Answer:
36b² - 60b + 25
Step-by-step explanation:
(5 - 6b)²
= (5 - 6b) (5 - 6b)
= 25 - 30b - 30b + 36b²
= 36b² - 60b + 25
So, the answer is 36b² - 60b + 25.
