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# Write the degree of each of the following polynomials:

i) 5x^{3} + 4x^{2} + 7x ii) 4 - y^{2 }iii) 5t - √7 iv) 3

**Solution:**

The highest power of the variable in a polynomial is called the degree of the polynomial.

i) Degree of 5x^{3} + 4x^{2} + 7x is 3 (the highest power of the variable x is 3).

ii) Degree of 4 - y^{2} is 2 (the highest power of the variable y is 2).

iii) Degree of 5t - √7 is 1 (the highest power of the variable t is 1).

iv) Degree of 3 is 0 (degree of a constant polynomial is 0. Here 3 = 3x^{0})

**☛ Check: **CBSE NCERT Solutions for Class 9 Maths Chapter 2

**Video Solution:**

## Write the degree of each of the following polynomials: (i) 5x³ + 4x² + 7x (ii) 4 - y² (iii) 5t - √7 (iv) 3

NCERT Solutions Class 9 Maths Chapter 2 Exercise 2.1 Question 4

**Summary:**

The degree of each of the following polynomials 5x^{3} + 4x^{2} + 7x, 4 − y^{2}, 5t − √7, and 3 are 3, 2, 1, and 0 respectively.

**☛ Related Questions:**

- Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer. i) 4x² - 3x + 7 ii) y² + √2 iii) 3√t + t√2 iv) y + (2/y) v) x10 + y3 + t50
- Write the coefficients of x² in each of the following:i) 2 + x² + xii) 2 - x² + x³iii) (π/2)x² + xiv) √2x - 1
- Give one example each of a binomial of degree 35, and of a monomial of degree 100.

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