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Class 9
Maths :-NCERT Solutions - Polynomials

Page No 32:
Question 5:
Classify the following as linear, quadratic and cubic polynomial:
(i) (ii)  (iii)  (iv)  (v) 
(vi)  (vii) 

Answer:

Linear polynomial, quadratic polynomial, and cubic polynomial has its degrees as 1, 2, and 3 respectively.
(i)  is a quadratic polynomial as its degree is 2.
(ii) is a cubic polynomial as its degree is 3.
(iii)  is a quadratic polynomial as its degree is 2.
(iv) 1 + x is a linear polynomial as its degree is 1.
(v)  is a linear polynomial as its degree is 1.
(vi) is a quadratic polynomial as its degree is 2.
(vii) is a cubic polynomial as its degree is 3.