Write the degree of each of the following polynomials

Question 4. Write the degree of each of the following polynomials:
(i) 5x³ + 4x² + 7x       (ii) 4 – y²          (iii) 5t – √7      (iv) 3
Solution: (i)5x³ + 4x² + 7x
In above expression 5x³ has highest power, and power is 3 so this is the polynomial of degree 3
(ii) 4 – y²
in above expression –y2 has highest power, and power is 2 so this is the polynomial of degree 2

(iii) 5t – √7     
in above expression 5t has highest power, and power is 1 so this is the polynomial of degree 1
(iv) 3

there is no variable therefore degree is 0