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Question : 9 of 160
Marks:
+1,
-0
Solution:
x=‌+‌,y=‌−‌i (x2+‌)(y2−‌)=[(x+‌)2−2](y−‌) |x|=1=|y| xx=1=yy] ∴‌‌[(x2+x2)(y2−y2) [(x+x)2−2xx](y+y)(y−y) [(‌)2−2](‌)(‌)i +‌×(‌i) =‌i
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