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October 21, 2014

October 21, 2014

Posted by **Lia** on Saturday, October 18, 2008 at 11:51pm.

- Pre Calculus -
**Reiny**, Sunday, October 19, 2008 at 12:20amso we are solving x^4+5x^2+4

it factors

(x^2+1)(x^2+4) = 0

x^2 = -1 or x^2 = -4

x = +/- i or x = +/- 2i where i = √-1

- Pre Calculus -
**Lia**, Sunday, October 19, 2008 at 1:23amThank you

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