## exercise 2.1 class 10 maths

Solutions: For finding number of zeroses of polynomials from graph, we need to check that how many times the graph cuts the x-axis, that will be the number of zeroses of that polynomial

(i) in this part the graph of the polynomial do not cut x-axis , so it has no Zero.

(ii) here graph cut x-axis 1 time so it has only 1 zero.

(iii) similarly here 3 zeroes

(iv) 2 zeroes

(v) 4 zeroes

(vi) 3 zeroes

## Important tips regarding polynomials

1. General form of a quadratic polynomial in x is axÂ²+bx +c , where a,b,c are real numbers and a is not zero.

2. Polynomials of degree 1 , 2, 3 and 4 are called linear polynomials, quadratic polynomials, cubic polynomials and biquadratic or quartic polynomials respectively.

3. A quadratic polynomial can have at most 2 zeroes and a cubic polynomial can have at most 3 zeros and so on.

4. The zeros of a polynomial are the x- coordinates of the points where the graph of polynomial intersects the x-axis.

5. In a quadratic polynomial axÂ²+bx +c

Sum of zeross = -b/a

Product of zeroes = c/a

Ncert Solutions Class 10 Maths Exercise 1.1 https://10thmathsguide.com/exercise-11-class-10-maths/

Ncert Solutions Class 10 Maths Exercise 1.2

Ncert Solutions Class 10 Maths Exercise 2.1 https://10thmathsguide.com/exercise-21-class-10-maths/

Ncert Solutions Class 10 Maths Exercise 2.2

Ncert Solutions Class 10 Maths Exercise 3.1 https://10thmathsguide.com/exercise-31-class-10-maths/

Ncert Solutions Class 10 Maths Exercise 3.2 https://10thmathsguide.com/exercise-32-class-10-maths/

Ncert Solutions Class 10 Maths Exercise 3.3 https://10thmathsguide.com/exercise-33-class-10-maths/

Ncert Solutions Class 10 Maths Exercise 4.1 https://10thmathsguide.com/exercise-41-class-10-maths/

Ncert Solutions Class 10 Maths Exercise 4.2 https://10thmathsguide.com/exercise-42-class-10-maths/

Ncert Solutions Class 10 Maths Exercise 4.3 https://10thmathsguide.com/exercise-43-class-10-maths/

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**MCQ Questions for Class 10 Maths all Chapters****https://sharmatutorial.in/category/mcq-class-10-maths/**

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