I need help on this ASAP polynomials

Answer:
see explanation
Step-by-step explanation:
The degree of a polynomial is determined by the value of the largest exponent of the variable in the polynomial
Given - 2x³ + 5[tex]x^{4}[/tex] - 3x
A cubic indicates a polynomial of degree 3 which it is not
The largest exponent is 4 thus is a polynomial of degree 4 , called a quartic