Question

.What are the zeroes of p(x)=
${x}^{2}$ -1.
(A) 5
(B) +-1
(C) -5
(D) -3
(E) None of these​

Answer 1

Question:

What are the zeros of the polynomial

p(x) = x^2 - 1.

Note:

To find the zeros of any polynomial p(x) , equate it to zero. ie; operate on p(x)=0.

Here,

The given polynomial is p(x) = x^2 -1.

To find its zeros, put p(x) = 0

=> p(x) = 0

=> x^2 - 1 = 0

=> x^2 = 1

=> x = ± √1

=> x = ± 1

Hence,

The required answer is : option (B)

Answer 2

$\large{\mathfrak{\red{\underline{\underline{........Answer........}}}}}$

=> p(x) = x² - 1

∴ For any zero p(x) = 0

So,

$\sf{\implies x = \pm \sqrt{1}}$

=> x = ± 1

So, zero of the polynomial is ± 1.

Hence, correct option is (B).