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## Homework Statement

Find all zeroes for the function f(x)

f(x)=x^3+25x

## Homework Equations

## The Attempt at a Solution

I tried factoring out x out of it.

x(x^2+25)

and again to give

x[(x+5i)(x-5i)]

this would give me the 0,-5i,+5i as the zeroes. Doesn't seem to be right though.

Any thoughts?

Thanks!

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