1.

For any two complex numbers z_(1), z_(2) the value of abs(z_(1)+z_(2))^(2)+abs(z_(1)-z_(2))^(2) is

Answer»

`abs(z_(1))^(2)+abs(z_(2))^(2)`
`2(abs(z_(1))^(2)+abs(z_(2))^(2))`
`(abs(z_(1))+abs(z_(2)))^(2)`
None of these

Answer :B


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