The polynomial is .

To find the degree of polynomial, you must find the degree of each term or monomial.

The degree of a monomial is the sum of the exponents of all its variables.

The monomial is , so its degree .

The monomial is , so its degree .

The monomial is a nonzero constant, so its degree .

The degree of a polynomial is the greatest degree of any term in the polynomial.

In the above polynomial greatest degree is 2, so its degree is 2 and then it is called quadratic polynomial.

In the above polynomial, two operations (addition and subtraction) involves between three terms.

So it is called trinomial.

The polynomial name according to degree and number of terms is quadratic trinomial.

The polynomial, name is quadratic trinomial.