Hi,

I have

I also know that z = -2-2i is one root, and since this is an equation with real coefficients another root is -2+2i. So i need to find the third root

Is there an easier way of solving this, other than polynomial division?

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- Sep 17th 2009, 03:30 PMJonescomplex numbers equation
Hi,

I have

I also know that z = -2-2i is one root, and since this is an equation with real coefficients another root is -2+2i. So i need to find the third root

Is there an easier way of solving this, other than polynomial division? - Sep 17th 2009, 03:49 PMPlato
- Sep 18th 2009, 01:10 AMJones
So just expand the brackets and replace z with a+bi ?