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Let |z1|=|"z"2|="p"/2 then "|z1+z2|^2...

Let `|z_1|=|"z"_2|="p"/2 ` then ` "|z_1+z_2|^2+|z_1-z_2|^2=` a.`p^2` b. `(p^2)/2` c. `2p^2` d. `(p^2)/4`

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