Question

The coefficient of first term of a polynomial written in standard (descending order) form is called the ____ coefficient ?

Answer 1

We know that

1) The degree of a polynomial is the highest degree of its terms
2) The leading term in a polynomial is the highest degree term
3) The leading coefficient of a polynomial is the coefficient of the leading term  
Therefore

The coefficient of first term of a polynomial written in standard (descending order) form is the coefficient of the leading term, thus is called the leading coefficient.

  the answer is
The leading coefficient 

Answer 2

The answer is: "leading".

 Therefore, the complete sentence is: "The coefficient of first term of a polynomial written in standard (descending order) form is called the leading coefficient".

 For example, if you have the following polynomial:

 2x²-5x+10=0

 Then, as you can see, the leading coefficient is: 2