Question

find the square root of z=-4+i8​

Answer 1

Answer:

z = $\sqrt{ - 4 + i8}$

Answer 2

Answer:

$\sqrt{z \: } = 4 + 8i \\ z = (4 + 8i) ^{2} \\ z = 16 + 64i^{2} + 64i \\ z = 16 - 64 + 64i \: \: \: \: (i ^{2} = - 1) \\ z = - 48 + 64i \\ z \: \: \\ \\ z$I hope answer is understandable