(z-3)(z^2 + 25) (z-3)((z + 5)^2 - 10z) (z-3)(z + 5 + i)(z + 5 - i) Does it make sense?
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how did you get the third line from the second? looks better
Originally Posted by Taluivren how did you get the third line from the second? looks better I'm not sure, that's why I was wondering. I thought that if I subtracted 10 it would even out the equation and I could leave it as a complex number, but after re-working it I found your way much more helpful (and correct ).
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