For the complex numbers \[{{z}_{1}}\] and \[{{z}_{2}}\] if \[|1-{{\bar{z}}_{1}}{{z}_{2}}{{|}^{2}}-|{{z}_{1}}-{{z}_{2}}{{|}^{2}}=k(1-|{{z}_{1}}{{|}^{2}})(1-|{{z}_{2}}{{|}^{2}})\] then ?k? equals to

For the complex numbers \[{{z}_{1}}\] and \[{{z}_{2}}\] if \[|1-{{\bar

1.	For the complex numbers \[{{z}_{1}}\] and \[{{z}_{2}}\] if \[\|1-{{\bar{z}}_{1}}{{z}_{2}}{{\|}^{2}}-\|{{z}_{1}}-{{z}_{2}}{{\|}^{2}}=k(1-\|{{z}_{1}}{{\|}^{2}})(1-\|{{z}_{2}}{{\|}^{2}})\] then ?k? equals to
A.	1
B.	\[-1\]
C.	2
D.	\[-2\]
Answer» B. \[-1\]

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For the complex numbers \[{{z}_{1}}\] and \[{{z}_{2}}\] if \[|1-{{\bar{z}}_{1}}{{z}_{2}}{{|}^{2}}-|{{z}_{1}}-{{z}_{2}}{{|}^{2}}=k(1-|{{z}_{1}}{{|}^{2}})(1-|{{z}_{2}}{{|}^{2}})\] then ?k? equals to

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