3 years ago

Factor z^3 - 2z^2 + 9z - 18

2 answers:

6 0

$z^3 - 2z^2 + 9z - 18 = (z^3 - 2z^2 )(+ 9z - 18 )=z^2 (z-2)+9 (z-2) \\ \\ =\boxed {\bf {(z^2+9)(z-2)=(z-3i)(z+3i)(z-2)}}$

miss Akunina [59]3 years ago

3 0

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