Will medal and fan!!
Find a third-degree polynomial function with integer coefficients that has 2, 7i, and -7i as zeros.

Question

Will medal and fan!!
Find a third-degree polynomial function with integer coefficients that has 2, 7i, and -7i as zeros.

anonymous · Answer

is it clear that one factor is $(x-2)$?

anonymous · Answer

if not, then it is now right?

anonymous · Answer

@satellite73 sorry, I forgot to thank you in my thread, so thanks!

anonymous · Answer

the other two factors are $(x-7i)$ and $(x+7i)$ and your job it to multiply this out, which is not as hard as it looks, since 
$$(x+7i)(x-7i)=x^2+49$$

anonymous · Answer

@NotSephiroth you are welcome!

mw647 · Answer

@satellite73 thank you so much! I was totally confused by this at first

anonymous · Answer

you got it now right? multiply 
$$(x-2)(x^2+49)$$ and you are done

mw647 · Answer

Yes, I have it from here. Thank you!! You're a life saver!

anonymous · Answer

yw