Write the degree of each of the following polynomials: (i) 5x 3 + 4x 2 + 7x (ii) 4 – y 2 (iii) 5t – √7 (iv) 3.

Question

Write the degree of each of the following polynomials:  (i) 5x 3 + 4x 2 + 7x (ii) 4 – y 2 (iii) 5t – √7 (iv) 3.

cdquestions Admin · Accepted Answer

Degree of a polynomial is the highest power of the variable in the polynomial. (i) 5x 3 + 4x 2 + 7x  This is a polynomial in variable x and the highest power of variable x is 3. Therefore, the degree of this polynomial is 3. (ii) 4 - y 2  This is a polynomial in variable y and the highest power of variable y is 2. Therefore, the degree of this polynomial is 2. (iii) 5t - √7  This is a polynomial in variable t and the highest power of variable t is 1. Therefore, the degree of this polynomial is 1. (iv) 3 This is a constant polynomial. Degree of a constant polynomial is always 0.

Length (in hours)	Number of lamps
300 − 400	14
400 − 500	56
500 − 600	60
600 − 700	86
700 − 800	74
800 − 900	62
900 − 1000	48

Length (in hours)	Number of lamps
300 − 400	14
400 − 500	56
500 − 600	60
600 − 700	86
700 − 800	74
800 − 900	62
900 − 1000	48

Write the degree of each of the following polynomials:
(i) 5x³ + 4x ² + 7x (ii) 4 – y ² (iii) 5t – √7 (iv) 3.

Solution and Explanation

Top CBSE Class IX Mathematics Questions

Top CBSE Class IX Questions