Question

P(x)=x2-1;x=-2 find wheter the following zeroes of the pollynomials are indicated towsrds them​

Answer 1

Given:

The polynomial is:

`p(x)=x^2-1`

To find:

Whether
`x=-2` is a zero of the given polynomial or not.

Solution:

If
`x=c` is a zero of a polynomial, then
`f(c)=0`.

We have,

`p(x)=x^2-1`

Putting
`x=-2` in the given polynomial.

`p(-2)=(-2)^2-1`

`p(-2)=4-1`

`p(-2)=3`

Since
`p(-2)\\eq 0`, therefore
`x=-2` is not a zero of the given polynomial.