zarkam21 zarkam21

22-03-2017
Mathematics

Answered

Urgent help please on this two step problem

Thanks

Urgent help please on this two step problem Thanks class=

Verified Answer :

Anonymous Anonymous

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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