Leaving Certificate Maths 2019 pp1 Q5

Here I go through a Leaving Certificate Maths question on complex numbers from 2019. It begins with the conjugate roots theorem, a look at an argand diagram, including modulus and argument calculations (using the unit circle), in order to write a complex number in polar form. Finally, DeMoivre's theroem is used to find a solution to the square root of a complex number.