The coefficient of 𝑥4 in the polynomial (𝑥−1)3(𝑥−2)3 is equal to _______.

Ten friends planned to share equally the cost of buying a gift for their teacher. When two of them decided not to contribute, each of the other friends had to p...

Operators □, ◊ and → are defined by: 𝑎□𝑏=(𝑎−𝑏)/(𝑎+𝑏),𝑎 ◊𝑏=(𝑎+𝑏)/(𝑎−𝑏),𝑎→𝑏=𝑎𝑏 Find the value of (66□6)→(66◊6).