11) Which of the following is zero of the polynomial x^3+x^2+x+1 1
-1
both options 1 and 2
None
please answer

-1

Step-by-step explanation:

The Polynomial Remainder Theorem

It states that the remainder of the division of a polynomial f(x) by (x-r) is equal to f(r).

We have the polynomial:

And we need to determine if x=1 and/or x=-1 are zeros of the polynomial.

Considering the polynomial remainder theorem, if we try any value for x, and the remainder is zero, then that value of x is a root or zero of the polynomial.

Find:

f(1)=4

Thus, x=1 is not a zero of f(x)

Now, find:

Thus, x=-1 is a zero of f(x)

-1

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: