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January 30, 2015

January 30, 2015

Posted by **NayNay** on Sunday, December 30, 2012 at 5:18am.

f(x)=3x^4-10x^3-12x^2+122x-39

**Use the complex zeros to write f in factored form.**

f(x)=

Please show work

- calculus--please help!! -
**Steve**, Sunday, December 30, 2012 at 5:56amf(x) = (x+3)(3x-1)(x^2-6x+13)

the quadratic has roots 3±2i, so

f(x) = (x+3)(3x-1)(x-3-2i)(x-3+2i)

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