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April 19, 2015

April 19, 2015

Posted by **Nikki** on Wednesday, September 5, 2012 at 3:21pm.

Please help! Thank you:)

- Math, Pre Calc -
**Steve**, Wednesday, September 5, 2012 at 3:39pmcomplex roots come in pair, so -i is also a root

f(x) = (x-2)(x+2)(x-i)x+i)

= (x^2-4)(x^2+1)

= x^4 - 3x^2 - 4

- Math, Pre Calc -
**Alexis**, Wednesday, September 5, 2012 at 4:15pmThanks!

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