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If a=1+i , then a^2 equals 1-i b. 2i c. ...

If `a=1+i ,` then `a^2` equals `1-i` b. `2i` c. `(1+i)(1-i)` d. `(i-1)`

A

2i

B

`1-i`

C

`1+i`

D

`i-1`

Text Solution

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The correct Answer is:
A
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