NCERT Solutions for Class 9 Maths Chapter 2 Polynomials in Hindi & English Medium, PDF form as well as online digital contents. Download NCERT Apps and Solutions based on latest CBSE Syllabus for 2019-20.

Class 9: | Maths – गणित |

Chapter 2: | Polynomials |

## NCERT Solutions for Class 9 Maths Chapter 2

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### Class 9 Maths Chapter 2 Polynomials Solutions

#### Hindi Medium and English Medium Solutions

- Class 9 Maths Chapter 2 Exercise 2.1 Solutions
- Class 9 Maths Chapter 2 Exercise 2.2 Solutions
- Class 9 Maths Chapter 2 Exercise 2.3 Solutions
- Class 9 Maths Chapter 2 Exercise 2.4 Solutions
- Class 9 Maths Chapter 2 Exercise 2.5 Solutions

- NCERT Books for Class 9 All Subjects
- NCERT Exemplar Problems Solutions
- Study Material for 2019-20 – English Medium
- Study Material for 2019-20 – Hindi Medium

##### Important Terms about Polynomials

- A combination of constants and variables, connected by four fundamental arithmetical operations +, -, x and / is called an algebraic expression. e.g. 6x² – 5y² + 2xy
- An algebraic expression which have only whole numbers as the exponent of one variable, is called polynomial in one variable. e.g. 3x³ + 2x² – 7x + 5 etc.
- The part of a polynomial separated from each other by + or – sign is called a term and each term of a polynomial has a coefficient.
- Highest power of the variable in a polynomial, is known as degree of that polynomial.

- On the Basis of Number of Terms
- A polynomial containing one non-zero term, is called a monomial.
- A polynomial containing two non-zero terms, is called a binomial.
- A polynomial containing three non-zero terms, is called a trinomial.

- On the Basis of Degree of Variables
- A polynomial of degree 0, is called a constant polynomial.
- A polynomial of degree 1, is called a linear polynomial.
- A polynomial of degree 2, is called a quadratic polynomial.
- A polynomial of degree 3, is called a cubic polynomial.
- A polynomial of degree 4, is called a biquadratic polynomial.

- The value obtained on putting a particular value of the variable in polynomial is called value of the polynomial at the value of variable.
- Zero of a polynomial p(x) is a number alpha, such that p(alpha) = 0. It is also called root pf polynomial equation p(x) = 0.

- Let f(x) be any polynomial of degree n,(n ≥ 1) and a be any real number. If f(x) is divided by the linear polynomial (x-a), then the remainder is f(a).
- Let f(x) be a polynomial of degree n,(n ≥ 1) and a be any real number. Then,
- If f(a) = 0, then (x – a) is a factor of f(x).
- If (x – a) is a factor of f(x), then f(a) = 0.