High School

In the polynomial function below, what is the leading coefficient?

[tex] F(x) = \frac{1}{3} x^3 + 8x^4 - 5x - 19x^2 [/tex]

A. 8
B. 2
C. [tex] \frac{1}{3} [/tex]
D. -19
E. -5

Answer :

To determine the leading coefficient of a polynomial, you need to identify the term with the highest degree, and then find the coefficient of that term.

Let's analyze the polynomial function:

[tex]\[ F(x) = \frac{1}{3} x^3 + 8 x^4 - 5 x - 19 x^2 \][/tex]

Step-by-step solution:

1. Identify the Degree of Each Term:
- [tex]\(\frac{1}{3} x^3\)[/tex] has a degree of 3.
- [tex]\(8 x^4\)[/tex] has a degree of 4.
- [tex]\(-5 x\)[/tex] has a degree of 1.
- [tex]\(-19 x^2\)[/tex] has a degree of 2.

2. Identify the Term with the Highest Degree:
Looking at the degrees we calculated, the highest degree is 4, which is for the term [tex]\(8 x^4\)[/tex].

3. Find the Coefficient of the Highest Degree Term:
The coefficient of the term [tex]\(8 x^4\)[/tex] is 8.

Therefore, the leading coefficient of the polynomial function is 8.

So, the correct answer is A. 8.