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December 20, 2014

December 20, 2014

Posted by **Jimmy-can someone please help** on Saturday, December 22, 2012 at 10:54pm.

f(x)=x^3-10x^2+42x-72

please show work.

- calculus -
**Steve**, Sunday, December 23, 2012 at 5:37amall rational roots will be factors of 72. Trying a few values, we get 4 as a root.

f(x) = (x-4)(x^2-6x+18)

use the quadratic formula for the complex roots.

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