If 2 + sqrt(3) is a polynomial root, name another root of the polynomial, and explain how you know it must also be a root

The another root of the polynomial  is

Step-by-step explanation:

let is a polynomial root.

Subtracting both sides by 2, we get

Squaring both sides, we get

On solving we get,

Using quadratic formula:

If one of the root of the polynomial is ; then another root by quadratic formula is

or else we can say that irrational roots will always come in conjugate pairs.

Sso, if is a root, then is also a root.

the correct answer is the second option

d

gimmee one of those gold crowns!

~coco