• #### Multiplying Complex Numbers - Problem 1

How to multiply an imaginary number by a complex number.
• #### Addition and Subtraction with Mixed Numbers - Concept

##### Math›Pre-Algebra›Fractions and MIxed Numbers
Adding or subtracting mixed numbers by either converting them to improper fractions or working with the integer part and the fractional part separately
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• #### Introduction to Real Numbers - Problem 2

##### Math›Algebra 2›Real Numbers
How to define inequalities.
• #### Finding the Roots of a Complex Number - Problem 2

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to use DeMoivre's Theorem to compute the square roots of i.
• #### More Roots of Complex Numbers - Problem 3

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to find the nth roots of unity.
• #### Converting Complex Numbers From Trigonometric Form to Rectangular - Problem 2

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to convert a complex number, z = 5*root(2)*(cos(7*pi/4) + i*sin(7*pi/4)), from trigonometric form to rectangular form.
• #### Dividing Complex Numbers - Problem 5

Dividing complex numbers where the denominator contains an imaginary number.
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• #### Multiplying Complex Numbers - Concept

How to multiply imaginary numbers.

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• #### Introduction to Imaginary Numbers - Concept

How to define an imaginary number.
• #### Concept

##### Science›Chemistry›Electrochemistry
How to use the oxidation number method to understand oxidation-reduction reactions.
• #### Dividing Complex Numbers - Concept

How to rationalize the denominator when dealing with an imaginary number.
• #### Adding and Subtracting Complex Numbers - Concept

How to add and subtract complex numbers.
• #### Multiplying Complex Numbers - Problem 2

How to multiply two complex numbers.
• #### Dividing Complex Numbers - Problem 1

How to rationalize the denominator when dealing with an imaginary number.