(i)

Since,

The degree of the given polynomial is 2

Hence,

The polynomial is a quadratic polynomial.

(ii)

Since,

The degree of the given polynomial is 3

Hence,

The polynomial is a cubic polynomial.

(iii)

Since,

The degree of the given polynomial is 2

Hence,

The polynomial is a quadratic polynomial.

(iv) -7+z

Since,

The degree of the given polynomial is 1

Hence,

The polynomial is a linear polynomial.

(v)

Since,

The degree of the given polynomial is 1

Hence,

The polynomial is a linear polynomial.

(vi)

Since,

The degree of the given polynomial is 3

Hence,

The polynomial is a cubic polynomial.