1.

Express `(2-3i)^(3)` in the form (a + ib).

Answer» Correct Answer - 46 - 9i
`(2-3i)^(3)=2^(3)-(3i)^(3)-(3xx2xx3i)(2-3i)`
`=(8-27i^(3)-36i-54)=(8+27i-36i-54)=(46-9i)`.


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