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  1. 07-05-2016, 01:20 AM Top | #37
    Feb 2011
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    : Creative questions -



    x , y



    \[\large \left ( 1-i \right )^{9}\left ( 1+i \right )^{11}\, =\, x+yi\]
    ; 07-05-2016 01:30 AM



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