144-NCERT-10-2-Polynomials - Ex-2.1

NCERT

10th Mathematics

Exercise 2.1

Topic: 2 Polynomials

Click here for ⇨ NCERT-10-1-Real Numbers - Ex-1.4

EXERCISE 2.1

Q1. The graphs of y = p(x) are given in Fig. below, for some polynomials p(x). Find the number of zeroes of p(x), in each case.

Explanation:

1) The graphs of y = p(x), cuts or touches x-axis, means y = 0. The number of zeroes of y = p(x) means y = p(x) = 0.

2) Put y = 0 in the equation, y = p(x), and get all possible values of x, when the given graph is in the equation form.

3) Here, simply observe how many times the graph cuts or touches the x-axis.

Solution:

Click here for ⇨ NCERT-10-2-Polynomials - Ex-2.2

ANIL SATPUTE