training in military tactics and weapon
The difference for the given polynomial is 
Explanation:
The given polynomial is 
A polynomial is generally a sum or difference of terms or variables which are separated by addition and subtraction signs. There are "three types of polynomial": Monomial, binomial and trinomial.
The difference between is found as follows:
D = 
Removing the brackets, we get,
D = 
D = 
D = 
Thus, the polynomial represents Option A as the difference.
Answer: The bigger cities had thriving cosmopolitan markets, and Constantinople became one of the largest trading hubs in the world where shoppers could stroll down covered streets and pick up anything from Bulgarian linen to Arabian perfumes.
Explanation: