10.3.27 Operations with complex numbers
condition: Given complex numbers \( z_{1}, z_{2} \). Find: \( z_{1}+z_{2}, z_{1}-z_{2}, z_{1} \cdot z_{2}, z_{1} / z_{2} \). \[ z_{1}=2-3 i, \quad z_{2}=5-4 i \]
Operations with complex numbers, their algebraic, trigonometric and exponential forms. Derivatives of functions, finding complex roots of polynomials, solving equations in complex numbers.