How many complex roots does the polynomial have?

This is correct; the polynomial can be factored as

The term accounts for the triple occurrence of the real root *x*=2. indeed has the four complex roots listed above.

My graphing calculator, the *TI-85*, gets it wrong:
It comes up with only one real root *x*=2, the other six roots it lists are complex.
Admittedly, two of the complex roots have a very tiny imaginary part (the number in front of the *i*), so they are "nearly" real.

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Sun Jun 8 21:51:31 MDT 1997

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