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The complex numbers z1,z2 and z3 satisfy...

The complex numbers `z_1,z_2` and `z_3` satisfying `(z_1-z_3)/(z_2-z_3)=(1-isqrt3)/2` are the verticles of a triangle which is:

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  5. For all complex niumbers z1, z2 satisfying absz1=12 and abs(z2-3-4i)=5...

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