Ex 12.1 Complex number Introduction

Ex 12.2 Argand diagrams

Ex 12.3 Addition & Subtraction of complex numbers

Ex 12.4 Multiplication of Complex numbers

Ex 12.5 Division Of Complex numbers

Ex 12.6 Quadratics with Complex numbers

Ex 12.7 Polynomials with Complex roots

Ex 12.8 Polar Coordinates

Ex 12.9 De Moivres

Ex 12.10 De Moivres for Rational Numbers