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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 …

Learn how to multiply two complex numbers. For example, multiply (1+2i)⋅ (3+i). A complex number is any number that can be written as a + b i , where i is the imaginary unit and a and b are real numbers.

We can multiply complex numbers graphically on the complex plane. We rotate an amount equal to the argument and scale by the modulus of the complex number by which we're multiplying.

Multiply complex numbers by single terms that are either real or pure imaginary.

We multiplied both sides by the conjugate of the denominator, which is a number with the same real part and the opposite imaginary part. What's neat about conjugate numbers is that their product is always …

We can multiply complex numbers graphically on the complex plane by rotating and scaling. Multiplying a complex number z by -3i rotates and scales z. Created by Sal Khan.

NCERT Math Class 11 Course: NCERT Math Class 11 > Unit 4 Lesson 2: Algebra of complex numbers Adding complex numbers Subtracting complex numbers Add & subtract complex numbers …

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

Learn about the conjugate of complex numbers, how to add and divide using conjugates, and the key property that multiplying a complex number by its conjugate produces a real number.