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22-03-2017
Mathematics

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Urgent help please on this two step problem
Thanks

Urgent help please on this two step problem Thanks class=

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Аноним Аноним

22-03-2017

numerator
(6 - 3i) * (2-i) = 12 - 6i - 6i + 3i² = 12 - 12i - 3 = 9 - 12i

denominator
(2+i) * (2-i) = 4 - 2i + 2i - i² = 4 + 1 = 5

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