Question

23.
Which of the following are the zeroes of p(x)=x²-1?
(a) 1, -1
(b) – 1, 2​

Answer 1

Answer:

The ans is option (a) 1, -1

(Find the attached pics for steps)

Step-by-step explanation:

We would know if the given number is a zero of a number if we use it as x in the formula and get 0 as the answer in the end. It's really simple, I'm not joking! Just use the no. they gave as x and then Eureka! U got to check whether if it is a zero of the no. or not! If 'n' is a number and while inserted in the polynomial, yields 0, then n is a zero of the polynomial (in this question, 1 and -1 is the zero of p(x)= $x^{2} -1$. If not, then the number given is not  a zero of the polynomial (like over here -1 and 2 is not the zero of p(x)= $x^{2} -1$.

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Hope this helps you, buddy! ^_____^