[MOVED] If 4i is zero of x^4+13x^2-48, then there must be...

[702lead]

If 4i is a zero of f(x)=x^4+13x^2-48 , there must be three real zeros of f(x) right.

 

[pka]

Lead, I have two questions for you.
You have posted seven or eight very basic questions in a calculus forum.
If fact, anyone with a minimum understanding of algebra could do them.
Are you in a calculus course? If so why do you have so many PreCalculus questions?

 

[stapel]

You have posted seven or eight very basic questions in a calculus forum.

Flood moved to more appropriate category. :wink:

Eliz.

 

[stapel]

If 4i is a zero of f(x)=x^4+13x^2-48 , there must be three real zeros of f(x) right.

On what basis did you come to this conclusion? What was your reasoning?

Please be complete. Thank you!

Eliz.