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January 25, 2015

January 25, 2015

Posted by **david** on Monday, October 31, 2011 at 1:35pm.

- college algebra -
**Steve**, Monday, October 31, 2011 at 2:16pmIf -5i is a zero, then so is +5i

So, we know that g(x) = (x^2+25)(x+a)

= x^3 + 25x + ax^2 + 25a

Looks like a=3

So, the remaining zero is x=-3

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