Answer:
a coefficient is a multiplicative factor in some term of a polynomial, a series, or any expression; it is usually a number, but may be any expression. In the latter case, the variables appearing in the coefficients are often called parameters, and must be clearly distinguished from the other variables.
For example, in
7x^{2}-3xy+1.5+y,}{\displaystyle 7x^{2}-3xy+1.5+y,}
Explanation:
