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If z(1) = 1 - 3i, z(2) = -4i and z(3) = ...

If `z_(1) =` 1 - 3i, `z_(2)` = -4i and `z_(3)` = 5, show that
`(z_(1)z_(2)) z_(3) = z_(1) (z_(2)z_(3))`

Text Solution

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The correct Answer is:
`-20i-60`
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