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NCERT · Class 10 · Maths

Chapter 2: Polynomials

Practice each question, then open the answer or worked solution.

Exercise 2.1

1 questions
Q1Written answer

The graphs of \[\text{y=p(x)}\] are given in following figure, for some Polynomials \[\text{p(x)}\]. Find the number of zeroes of \[\text{p(x)}\], in each case.

(i).



(ii).



(iii). 



(iv). 



(v). 



(vi). 



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Worked solution

Ans: The graph does not intersect the \[\text{x-axis}\] at any point. Therefore, it does not have any zeroes.


Ans: The graph intersects at the \[\text{x-axis}\] at only \[\text{1}\]point. Therefore, the number of zeroes is \[\text{1}\].


Ans: The graph intersects at the \[\text{x-axis}\] at \[\text{3}\] points. Therefore, the number of zeroes is \[\text{3}\].


Ans: The graph intersects at the \[\text{x-axis}\] at \[\text{2}\] points. Therefore, the number of zeroes is \[\text{2}\]. 


Ans: The graph intersects at the \[\text{x-axis}\] at \[\text{4}\] points. Therefore, the number of zeroes is \[\text{4}\].


Ans: The graph intersects at the \[\text{x-axis}\] at \[\text{3}\] points. Therefore, the number of zeroes is \[\text{3}\].