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. (Explain in 1 or 2 sentences)

Question

myininaya · Answer

I guess they are defining this polynomial to have real coefficients even though they didn't say that. 
So when you solve $$ax^2+bx+c=0$$
You get $$x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}$$.
See of you can use that here. :)

myininaya · Answer

I'm also assuming that this polynomial has a quadratic factor. 
Such a weird question. 
Seems incomplete.

anonymous · Answer

I need it in sentences.. :/ sorry

anonymous · Answer

That doesn't answer the question either though, cause it's asking what would be another root if one of the polynomial roots is 2+ sqrt(3)

myininaya · Answer

Yes it does.

myininaya · Answer

That is 2 general solutions to a general quadratic above.

myininaya · Answer

A quadratic is a polynomial.