Z = 3 – 4I Z 3 4I 2Z Z 2(3 4I) 3 4I 9 4I      25I 25I 25I(3...

Câu 5.a : z = 3 – 4i

^

^{z 3 4i}

^{ }

2z z 2(3 4i) 3 4i 9 4i

 



 

 

25i

25i

25i(3 4i)

4 3i







 

z

3 4i

3

4



²



²