Welcome to the world of imaginary and complex numbers. We'll learn what imaginary and complex numbers are, how to perform arithmetic operations with them, represent them graphically on the …

Explore complex numbers and their properties with Khan Academy's free, interactive algebra lessons.

Introduction to complex numbers, their properties, and operations explained in an easy-to-understand manner. Learn about real and imaginary parts, addition, subtraction, multiplication, and division.

Solving quadratic equations can lead to complex solutions. Listen to Sal break down the process using the quadratic formula and standard form. Then, learn how to verify these complex solutions, ensuring …

Balancing chemical equations ensures the same number of each atom appears on both sides, following the law of conservation of matter. Adjust only coefficients—not subscripts—to achieve balance. …

Sal finds all complex solutions to the equation x^3=1. Created by Sal Khan.

Discover how to multiply complex numbers! Just like multiplying regular numbers, you can use the distributive property or FOIL method. Remember, the imaginary unit 'i' squared equals -1. So, when …

Complex numbers This lesson covers skills from the following lessons of the NCERT Math Textbook: (i) 4.1- Introduction and (ii) 4.2 - Complex numbers

Master algebra concepts like variables, equations, functions, and graphs with Khan Academy's comprehensive resources and tutorials.

A balanced chemical equation shows the same number of each type of atom on both sides of the arrow. In this example, we balance the combustion reaction of ethylene, C₂H₄, and provide tips on how to …