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# Verify Whether the Indicated Numbers is Zeroes of the Polynomials Corresponding to Them in the Following Case: F ( X ) = X 2 − 1 , X = 1 , − 1 - CBSE Class 9 - Mathematics

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ConceptZeroes of a Polynomial

#### Question

Verify whether the indicated numbers is zeroes of the polynomials corresponding to them in the following case:

f(x)=x^2- 1,x=1,-1

#### Solution

f(x)=x^2- 1,x=1,-1

we have f(x)x^2 -1

put x=and  x=-1

⇒ f(1)=(1)^2 -1   and f(-1)=(-1)^2-1

=1-1=0                        =1-1=0

∴=1,-1are the roots of f(x)=x^2-1

Is there an error in this question or solution?

#### APPEARS IN

RD Sharma Solution for Mathematics for Class 9 by R D Sharma (2018-19 Session) (2018 to Current)
Chapter 6: Factorisation of Polynomials
Ex.6.20 | Q: 2.2 | Page no. 8
Solution Verify Whether the Indicated Numbers is Zeroes of the Polynomials Corresponding to Them in the Following Case: F ( X ) = X 2 − 1 , X = 1 , − 1 Concept: Zeroes of a Polynomial.
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