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

If `z_(1) = 2 - i` and `z_(2) = -4` + 3i, find the inverse of `z_(1)z_(2) and (z_(1))/(z_(2))`.

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The correct Answer is:
`(z_(1)z_(2))^(-1)= (-1-2i)/(25), (z_(1))/(z_(2))= (1)/(5)(-11+2i)`
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