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Mathematics 6 Online
OpenStudy (loser66):

Someone explain me (10) Please

OpenStudy (loser66):

OpenStudy (anonymous):

what about it is unclear?

OpenStudy (loser66):

I don't know how to get from the middle term to the last term

OpenStudy (anonymous):

think of it as matrix multiplication of a 2x1 and a 1x1. and dont forget that i^2 = -1

OpenStudy (loser66):

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