Answer:
A, B, C, E
Step-by-step explanation:
A. F(x) = 3x-^3 - 19 is a Polynomial of degree 3
B. F(x) = 2x^2 + 5x - 3 Is a Polynomial of degree 2 or a quadratic function
C. F(x) = -x^3 + 5x2 + 7x - 1 is also a polynomial of the degree 3
D. F(x) = -x^3 + sq -x is not a polynomial due to the square root operation
E. F(x) = 3/5x^4 - 18x^3 + x^2 - 10x + 3.5 is a Polynomial of the degree 4
What is a Polynomial?
In mathematics, a polynomial is an expression consisting of variables and coefficients, that involves only the operations of addition, subtraction, multiplication, and non negative integer exponents of variables.
Answer:
A, B, C and E are polynomial functions, D is not.
Step-by-step explanation:
An polynomial is an algebraic entity of the form:
[tex]p(x) = \Sigma \limits_{i=0}^{n}\, a_{i}\cdot x^{i}, \forall i\in\mathbb{N}_{O}[/tex]
Where [tex]a_{i}[/tex] is the i-th coefficient and [tex]n[/tex] is the order of the polynomial.
The function A is a third-order polynomial.
The function B is a second-order polynomial.
The function C is a third-order polynomial.
The function D is not a polynomial due to the presence of a square root.
The function E is a fourth-order polynomial.
