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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

God
2005-10-31 12:05:56

Expand:
(x-2)(x-1-i)(x-4-2i)
That should be your answer.

Andorin
2005-10-31 08:07:02

Hi,

   An exercise is my workbook asks to find a cubic equation with roots of 2, 1+j and 4+2j (where j is the the square root of -1). I am lost as to how to work this out. Any chance of someone guiding me through?

Cheers in advance...

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