NCERT Class 9 Solutions: Polynomials (Chapter 2) Exercise 2.2 – Part 2
Q3 Verify whether the following are zeroes of the polynomial, indicated against them.
Solution:
Zero of a polynomial are the points where its value becomes zero.

If is a zero of polynomial
Then, should be 0
Therefore, is a zero of polynomial

If is a zero of polynomial
Then, should be 0
Therefore, is not a zero of polynomial

If are the zeros of polynomial
Then, should be 0
Therefore, ae zeros of polynomial

If are zeros of polynomial
Then, should be 0
Therefore, are zeros of polynomial

If is a zero of polynomial
Then, should be 0
Therefore, is a zero of polynomial

If is a zero of polynomial
Then, should be 0
Therefore, is a zero of polynomial

If are zeros of polynomial
Then, should be 0
Therefore, is a zero of polynomial
But is not a zero of this polynomial

If is a zero of polynomial
Then, should be 0
Therefore, is not a zero of polynomial
Q4 Find the zero of the polynomial in each of the following cases:
Solution:

The value of x for which the polynomial becomes zero, i.e. are known as “zeros” of the polynomial.
We have to find x for which,
Therefore, is a zero of polynomial

The value of x for which the polynomial becomes zero, i.e. are known as “zeros” of the polynomial.
Therefore, is a zero of polynomial

The value of x for which the polynomial becomes zero, i.e. are known as “zeros” of the polynomial.
We have to find x for which,
Therefore, is a zero of polynomial

The value of x for which the polynomial becomes zero, i.e. are known as “zeros” of the polynomial.
We have to find x for which,
Therefore, is a zero of polynomial

The value of x for which the polynomial becomes zero, i.e. are known as “zeros” of the polynomial.
We have to find x for which,
Therefore, is a zero of polynomial

The value of x for which the polynomial becomes zero, i.e. are known as “zeros” of the polynomial.
We have to find x for which,
Therefore, is a zero of polynomial