I your introduce you to for some things

- |z| = it is known as modulo of z

It is calculated by √(a^2+b^2) in mind - For calculate square root of complex number

First you calculate |z| and then

√ \frac{|z| + real part}{2} + i√\frac{|z| - real part}{2}

Example -

Square root of 7 - 24i

|z| = √(7^2 + 24^2) = √(49+ 576) = √625 = 25

√\frac{25+7}{2} - i√\frac{25-7}{2}

= √16 - i√9

= 4 - 3i is the square root.

Example -

Square root of 8+6i

|z| = √(64+36) = √100 = 10

= √\frac{10+8}{2} + i√\frac{10-8}{2}

= √9 + i√1

= 3+ i is the square root.

If you my written text is not clearly I gave you one picture to this