If `z_1, z_2 in C ,z1 2 in R ,z_1(z1 2-3z2 2)=2a n dz_2(3z1 2-z2 2)=11` , then the value of `z1 2+z2 2` is `10` b. `12` c. `5` d. `8`

If z_1, z_2 in C ,z_1^ 2 in R ,z_1(z_1^ 2-3z_2 ^2)=2 a n d z_2(3z_1 ^2-z_2^ 2)=11 , then the value of z_1^ 2+z_2^ 2 is a. 10 b. 12 c. 5 d. 8

If z_1, z_2 in C , z_1^2 in R , z_1(z_1^2-3z_2^2)=2 and z_2(3z_1^2-z_2^2)=11 , then the value of z_1^2+z_2^2 is

If z_1, z_2 in C ,z_1^2+z_2^2 in R ,z_1(z_1^2-3z_2^2)=2 and z_2(3z1^2-z2^2)=11 , then the value of z1 2+z2 2 is 10 b. 12 c. 5 d. 8

If z_1, z_2 in C ,z_1^2+z_2^2 in R ,z_1(z_1^2-3z_2^2)=2 and z_2(3z_1^2-z_2^2)=11 , then the value of z_1 ^2+z_2 ^2 is 10 b. 12 c. 5 d. 8

If z_(1),z_(2)in C,z_(1)^(2)in R,z_(1)(z_(1)^(2)-3z_(2)^(2))=2 and z_(2)(3z_(1)^(2)-z_(2)^(2))=11 ,then the value of z_(1)^(2)+z_(2)^(2) is 10 b.12 c.5d.8

If z_1,z_2 in C , show that (z_1+ z_2)^2= z_1^2+2 z_1 z_2+ z_2^2 .

If z_(1),z_(2)inC,z_(1)^(2)+z_(2)^(2)inR,z_(1)(z_(1)^(2)-3z_(2)^(2))=2 and z_(2)(3z_(1)^(2)-z_(2)^(2))=11, the value of z_(1)^(2)+z_(2)^(2) is

If z_(1),z_(2)inC,z_(1)^(2)+z_(2)^(2)inR,z_(1)(z_(1)^(2)-3z_(2)^(2))=2 and z_(2)(3z_(1)^(2)-z_(2)^(2))=11, the value of z_(1)^(2)+z_(2)^(2) is

If z_(1),z_(2)inC,z_(1)^(2)+z_(2)^(2)inR,z_(1)(z_(1)^(2)-3z_(2)^(2))=2 and z_(2)(3z_(1)^(2)-z_(2)^(2))=11, the value of z_(1)^(2)+z_(2)^(2) is

If z_(1),z_(2)inC,z_(1)^(2)+z_(2)^(2)inR,z_(1)(z_(1)^(2)-3z_(2)^(2))=2 and z_(2)(3z_(1)^(2)-z_(2)^(2))=11, the value of z_(1)^(2)+z_(2)^(2) is