Answer :

(i) A quadratic polynomial is a polynomial of degree 2


the degree of 5x2 + x – 7 is 2


5x2 + x – 7 is a quadratic polynomial.


(ii) A cubic polynomial is a polynomial of degree 3


the degree of 5x2 + x – 7 is 3


5x2 + x – 7 is a cubic polynomial.


(iii) A quadratic polynomial is a polynomial of degree 2


the degree of x2 + x + 4 is 2


x2 + x + 4 is a quadratic polynomial.


(iv) A linear polynomial is a polynomial of degree 1


the degree of x – 1 is 1


x – 1 is a linear polynomial.


(v) A linear polynomial is a polynomial of degree 1


the degree of 3p is 1


3p is a linear polynomial.


(vi) A quadratic polynomial is a polynomial of degree 2


the degree of πr2 is 2


πr2 is a quadratic polynomial.


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