(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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- Sep 7th 2009, 02:06 AMRAzDoes this simplification make sense?(z-3)(z^2 + 25)

(z-3)((z + 5)^2 - 10z)

(z-3)(z + 5 + i)(z + 5 - i)

Does it make sense?

- Sep 7th 2009, 02:17 AMTaluivren
how did you get the third line from the second?

$\displaystyle (z-3)(z^2+25) = (z-3)(z+5i)(z-5i)$ looks better - Sep 7th 2009, 02:44 AMRAz