Which polynomial is a quintic binomial?A. x 4 - 2 x 3 - x 2...

Solution
The correct option is C
$3{\mathrm{x}}^5+2$
Explanation of the correct option:
Option C:
A polynomial of fifth-degree is called a quintic binomial.
So based on the question only $3{\mathrm{x}}^5+2$, which is a polynomial of degree $5$
Thus the polynomial $3{\mathrm{x}}^5+2$ is a quintic binomial.
So, the correct option is option C.
Thus, option C is the correct answer.
Explanation of the incorrect options:
Option A:
The polynomial ${\mathrm{x}}^4-2{\mathrm{x}}^3-{\mathrm{x}}^2+7\mathrm{x}+11$ is a polynomial of degree $4.$ And a fourth-degree polynomial is called a bi-quadratic polynomial.
So, option A is the incorrect option.
Option B:
The polynomial ${\mathrm{x}}^2+4\mathrm{x}$ is a polynomial of degree $2.$A second-degree polynomial is called a quadratic polynomial.
So, option B is the incorrect option.
Option D:
The polynomial $5{\mathrm{x}}^2-2\mathrm{x}+1$ is a polynomial of degree $2.$The second-degree polynomial is called a quadratic polynomial.
So, option D is the incorrect option.
Hence from the obtained information, only option C is correct.
Thus, option C is the correct option.