• #### Finding the Roots of a Complex Number - Concept

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

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to find the nth roots of unity.
• #### Finding the Roots of a Complex Number - Problem 1

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to use DeMoivre's Theorem to compute the fourth roots of a complex number, 16 and -16.
• #### 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.
• #### Finding the Roots of a Complex Number - Problem 3

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to use DeMoivre's Theorem and the half-angle formulas to compute the cube roots of a complex number, 7+24*i.
• #### More Roots of Complex Numbers - Problem 2

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to use four guidelines to find the fifth roots of a complex number.
• #### More Roots of Complex Numbers - Problem 1

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to use four guidelines to find the sixth roots of a complex number, and how to identify the geometric properties of the roots.
• #### More Roots of Complex Numbers - Concept

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to find the roots of a complex number quickly using four simple guidelines.
• #### Multiplying Complex Numbers - Problem 1

How to multiply an imaginary number by a complex number.
• #### Multiplying Complex Numbers - Problem 2

How to multiply two complex numbers.
• #### Dividing Complex Numbers - Problem 2

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

How to add and subtract complex numbers.
• #### Adding and Subtracting Complex Numbers - Problem 1

How to add and subtract complex numbers.
• #### 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 4

How to simplify radical quotients with a negative root in the denominator.
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• #### Dividing Complex Numbers - Problem 6

How to divide complex numbers.
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• #### Multiplying Complex Numbers - Problem 4

How to multiply complex binomials.
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